2013

Brunini C., L. Sánchez (2013). Geodetic Reference Frame for the Americas. GIM International, 3(27):26-31.

Sánchez L., W. Seemüller, H. Drewes, L. Mateo, G. González, A. Silva, J. Pampillón, W. Martínez, V. Cioce, D. Cisneros, S. Cimbaro (2013). Long-Term Stability of the SIRGAS Reference Frame and Episodic Station Movements Caused by the Seismic Activity in the SIRGAS Region. In: Altamimi Z. and Collilieux X. (Eds.): Reference Frames for Applications in Geosciences, IAG Symposia 138: 153-161, DOI:10.1007/978-3-642-32998-2_24, Springer Berlin Heidelberg

2012

Azpilicueta, F., C. Brunini, and S.M. Radicella (2012). Semi-annual Anomaly and Annual Asymmetry on TOPEX TEC During a Full Solar Cycle. In: Kenyon S., M.C. Pacino, U. Marti (Eds.), "Geodesy for Planet Earth", IAG Symposia, 136: 769-774.

Brunini , C., L. Sánchez (2012). Geodetic activities in Latin America and The Caribbean: alwais IN. Coordinates, Vol. VIII, Issue 6, June. ISSN 0973-2136

Brunini, C., L. Sánchez, H. Drewes, S. Costa, V. Mackern, W. Martínez, W. Seemüller, A. da Silva (2012). Improved Analysis Strategy and Accessibility of the SIRGAS Reference Frame. In: Kenyon S., M.C. Pacino, U. Marti (Eds.), "Geodesy for Planet Earth", IAG Symposia, 136: 3-10.

Bruyninx, C., Z. Altamimi, M. Becker, M. Craymer, L. Combrinck, A. Combrink, J. Dawson, R. Dietrich, R. Fernandes, R. Govind, T. Herring, A. Kenyeres, R. King, C. Kreemer, D. Lavallée, J. Legrand, L. Sánchez, G. Sella, Z. Shen, A. Santamaría-Gómez, G. Wöppelmann (2012). A Dense Global Velocity Field Based on GNSS Observations: Preliminary Results. In: Kenyon S., M.C. Pacino, U. Marti (Eds.), "Geodesy for Planet Earth", IAG Symposia, 136: 19-26.

Costa, S.M.A, A.L. Silva, J.A. Vaz (2012). Processing Evaluation of SIRGAS-CON Network by IBGE Analysis Center. In: Kenyon S., M.C. Pacino, U. Marti (Eds.), "Geodesy for Planet Earth", IAG Symposia, 136: 859-867.

Costa, S.M.A., A.L. Silva, J.A. Vaz (2012). Report on the SIRGAS-CON Combined Solution by IBGE Analysis Center In: Kenyon S., M.C. Pacino, U. Marti (Eds.), "Geodesy for Planet Earth", IAG Symposia, 136: 853-858.

Costa, S.M.A., M.A. de Almeida Lima, N.J. de Moura Jr, M.A. Abreu, A.L. de Silva, L.P. Souto Fortes, A.M. Ramos (2012). RBMC in Real Time via NTRIP and Its Benefits in RTK and DGPS Surveys. In: Kenyon S., M.C. Pacino, U. Marti (Eds.), "Geodesy for Planet Earth", IAG Symposia, 136: 917-924.

Cruz Ramos, O., L. Sánchez (2012). Efectos en el marco de referencia SIRGAS del terremoto del 7 de noviembre de 2012 en Guatemala. DGFI, Munich, Nov. 16, 2012.

Cruz Ramos, O., L. Sánchez (2012). SIRGAS and the earthquake of November 7, 2012 in Guatemala. DGFI, Munich, Nov. 16, 2012.

Drewes, H. (2012). How to Fix the Geodetic Datum for Reference Frames in Geosciences Applications?. In: Kenyon S., M.C. Pacino, U. Marti (Eds.), "Geodesy for Planet Earth", IAG Symposia, 136: 657-664.

Drewes, H., O. Heidbach (2012). The 2009 Horizontal Velocity Field for South America and the Caribbean. In: Kenyon S., M.C. Pacino, U. Marti (Eds.), "Geodesy for Planet Earth", IAG Symposia, 136: 657-664.

Fortes, L.P.S., S.M.A. Costa, M.A. Abreu, A.L. Silva, N.J.M Ju´nior, K. Barbosa, E. Gomes, J.G. Monico, M.C. Santos, Te´treault (2012). Modernization and New Services of the Brazilian Active Control Network. In: Kenyon S., M.C. Pacino, U. Marti (Eds.), "Geodesy for Planet Earth", IAG Symposia, 136: 967-972.

Sánchez, L. (2012). IGS Regional Network Associate Analysis Centre for SIRGAS (IGS RNAAC SIR). Report of activities 2011. In: Meindl, M., R. Dach, Y. Jean (Eds.), International GNSS Service, Technical Report 2011; Astronomical Institute, University of Bern, p. 107-115. Available at ftp://igs.org/pub/resource/pubs/2011_techreport.pdf.

Sánchez, L., W. Seemüller, M. Seitz (2012). Combination of the Weekly Solutions Delivered by the SIRGAS Processing Centres for the SIRGAS-CON Reference Frame. In: Kenyon S., M.C. Pacino, U. Marti (Eds.), "Geodesy for Planet Earth", IAG Symposia, 136: 845-852.

Seemüller, W., M. Seitz, L. Sánchez, H. Drewes (2012).: The new Multi-year Position and Velocity Solution SIR09P01 of the IGS Regional Network Associate Analysis Centre (IGS RNAAC SIR). In: Kenyon S., M.C. Pacino, U. Marti (Eds.), "Geodesy for Planet Earth", IAG Symposia, 136: 877-884.


2011

Cisneros, D. (2011). Campo de velocidades del Ecuador - VEC_EC, obtenido a través de mediciones de campañas GPS de los últimos 15 años y medidas de una red GPS permanente. Géosciences Azur, Sophia Antipolis - Valbonne, Francia.

Sánchez, L., M. Seitz (2011). Recent activities of the IGS Regional Network Associate Analysis Centre for SIRGAS (IGS RNAAC SIR). DGFI Report No. 87.

Sánchez, L., C. Brunini, V. Mackern, W. Martínez, R. Luz (2011). SIRGAS: the geocentric reference frame of the Americas. In: Proceedings of the International Symposium on Global Navigation Satellite Systems, Space-Based and Ground-Based Augmentation Systems and Applications 2010. Brussels, Belgium. November 29-30, 2010. Berlin Senate Department for Urban Development. P. 21-25.


2010

Cioce V., M. Hoyer, E. Wildermann, G. Royero, R. Espinosa, T. Méndez (2010). Aprovechamiento de la insfraestructura observacional SIRGAS-CON en Venezuela para el seguimiento del vapor de agua troposférico. Presentado en la Reunión SIRGAS 2010, noviembre 11 y 12, Lima, Perú.

Echalar, A., L. Sánchez (2010). Ajuste del Marco de Referencia Geodésico Nacional de Bolivia en SIRGAS: MARGEN-SIRGAS. Presentado en la Reunión SIRGAS 2010, noviembre 11 y 12, Lima, Perú.

Figueroa, C., W. Amaya, L. Sánchez (2010). Integración de la red geodésica básica nacional de El Salvador a SIRGAS. En: Revista Cartográfica, 85/86: 19-34. Instituto Panamericano de Geografía e Historia, México.

Jamur, K.P., L.F.S. Melo, S.R.C. de Freitas (2010). Avalacao dos modelos do campo da gravidade terrestre advindos da missao GOCE - GRAVITY FIELD AND STEADY-STATE OCEAN CIRCULATION EXPLORER. Presentado en la Reunión SIRGAS 2010, noviembre 11 y 12, Lima, Perú.

Sánchez, L., Seemüller, W., Drewes, H. (2010). SIRGAS and the earthquake of February 27th, 2010 in Chile. Analysis Report. SIRGAS Analysis Centre at DGFI.

Sánchez, L., Seemüller, W., Drewes, H. (2010). SIRGAS y el terremoto del 4 de abril de 210 en México. Reporte de cálculo. Centro de Análisis SIRGAS en el DGFI.

Sánchez, L., W. Seemüller, M. Seitz, B. Forberg, F. Leismüller, H. Arenz. (2010). SIRGAS: das Bezugssystem fuer Lateinamerika und die Karibik. Zeitschr. für Verm. (135) 80-86.

Sánchez, L., Seemüller, W., Drewes, H. (2010). SIRGAS and the earthquake of April 4th, 2010 in Mexico. Analysis Report. SIRGAS Analysis Centre at DGFI.

Sánchez, L., Seemüller, W., Drewes, H. (2010). SIRGAS y el terremoto del 27 de febrero de 210 en Chile. Reporte de cálculo. Centro de Análisis SIRGAS en el DGFI.

Seemüller W., L. Sanchez, M. Seitz M, H. Drewes (2010). The position and velocity solution SIR10P01 of the IGS Regional Network Associate Analysis Centre for SIRGAS (IGS RNAAC SIR). DGFI Report No. 86

Zurita, P., D. Cisneros, M. Bayas, M. Amores (2010). Adopción de SIRGAS como nuevo marco de referencia para el Ecuador. Presentado en la Reunión SIRGAS 2010, noviembre 11 y 12, Lima, Perú.


2009

Angermann, D., H. Drewes, B. Meisel, L. Sánchez, W. Seemüller, M. Seitz. (2009). DGFI combination methodology for terrestrial reference frame computations. Boll. Geod. Sci. Aff. (68) 175-198.

Brunini, C., Azpilicueta, F. (2009). SBAS type Ionospheric correction and integrity assessment experiment in Central and South American region. En: M. Herraiz, B. de la Morenas (eds.), Física de la Tierra, 20, 83-98, Universidad Complutense de Madrid.

Fortes, L.P.S, Costa, S.M.A., Abreu, M. A., Silva, A.L., Junior, N. J.M., Monico, J. G.,; Santos, M. C., Tetreault, P. (2009). Latest Enhancements in the Brazilian Active Control Network. Springer. IAG Symposia, Vol. 133: 65-70.

Luz, R.T., W. Bosch, S.R.C. Freitas, B. Heck, R. Dalazoana (2009). Evaluating the Brazilian Vertical Datum Through Improved Coastal Satellite Altimetry Data. Springer. IAG Symposia, Vol. 133:735-740.

Luz, R.T., S.R.C. de Freitas, B. Heck, W. Bosch (2009). Challenges and First Results Towards the Realization of a Consistent Height System in Brazil. Springer; IAG Symposia; Vol. 134:291-296.

Mackern, M. V., M. L. Mateo, A. M. Robin, A. V. Calori (2009). A Terrestrial Reference Frame (TRF), coordinates and velocities for South American stations: contributions to Central Andes geodynamics, Advances in Geosciences, 7, 1-4.

Martínez, W., Sánchez, L. (2009). Realization of the SIRGAS Reference Frame in Colombia. Springer; IAG Symposia; Vol. 134: 185-190.

Sánchez, L. (2009). Strategy to Establish a Global Vertical Reference System. Springer; IAG Symposia; Vol. 134:273-278.

Natali, M.P., Müller, M., Fernández, L., Brunini, C. (2009). CPLat: the Pilot Processing Center for SIRGAS in Argentina. Springer; IAG Symposia; Vol. 134:179-184.

Natali, M.P., M. Mueller, L. Fernandez, C. Brunini, (2009). CPLat: first operational experimental processing center for SIRGAS in Argentina. J. Geodesy (83) 219-226, doi:10.1007/s00190-008-0270-5.

Oliveria, L.C., Santos, M.C., Nievinski, F.G., Leandro, R.F., Costa, S.M.A., Santos, M.F. , Magna, J. , Galo, M., Camargo, P.O., Monico, J.G., Silva, C.U., MaiaT.B. (2009). Searching for the Optimal Relationships between SIRGAS2000, South American Datum of 1969 and Córrego Alegre in Brazil. Springer. IAG Symposia, Vol. 133: 71-76.

Sánchez, L., Brunini, C. (2009). Achievements and Challenges of SIRGAS. Springer; IAG Symposia; Vol. 134: 161-166.doi:10.1007/978-3-642-00860-3_25.

Sánchez, L., W. Bosch (2009). The Role of the TIGA Project in the Unification of Classical Height Systems. Springer; IAG Symposia; Vol. 134:285-290.

Seemüller, W. (2009). The Position and Velocity Solution DGF06P01 for SIRGAS. Springer; IAG Symposia; Vol. 134:167-172.

Seemueller, W., M. Seitz, L. Sánchez, H. Drewes (2009). The position and velocity solution SIR09P01 of the IGS Regional Network Associate Analysis Centre for SIRGAS (IGS RNAAC SIR). DGFI Report No. 85, Munich. 112 P.

Tierra, A.R., de Freitas, S.R.C., Guevara, P. M. (2009). Using an Artificial Neural Network to Transformation of Coordinates from PSAD56 to SIRGAS95. Springer; IAG Symposia; Vol. 134: 173-178.


2008

Brunini, C., Meza, A., Gende M., Azpilicueta, F. (2008). South American regional ionospheric maps computed by GESA: a pilot service in the framework of SIRGAS. En: Advances in Space Research, doi:10.1016/j.asr.2007.08.041. Available online via the following DOI link: http://dx.doi.org/10.1016/j.asr.2007.08.041

Luz, R. T. (2008). Estratégias para modernização da componente vertical do Sistema Geodésico Brasileiro e sua integração ao SIRGAS. Tese (Doutorado em Ciências Geodésicas). Universidade Federal do Paraná, Setor de Ciências da Terra, Curso de Pós-Graduação em Ciências Geodésicas. Curitiba, 207 f. Biblioteca Virtual da UFPR (http://www.cienciasgeodesicas.ufpr.br/teses/teses02.html)

Sánchez L.(2008). Approach for the establishment of a global vertical reference level. IAG Symposia Vol. 132, 119-124, Springer, Berlin, Heidelberg

Sánchez, L., Brunini, C. (2008). SIRGAS: Basis for geosciences, geodata and navigation in Latin America. In: Proceedings of the International Symposium on Global Navigation Satellite Systems, Space-based and Ground-based Augmentation Systems and Applications. Berlin, 11-14 November. Berlin Senate Department for Urban Development. P. 37 - 39.

Sánchez, L., W. Seemüller, M. Krügel (2008). Comparison and combination of the weekly solutions delivered by the SIRGAS Experimental Processing Centres. DGFI Report No. 8o. Munich. 77 p.

Seemüller, W., M. Krügel, L. Sánchez (2008).The position and velocity solution DGF08P01 of the IGS Regional Network Associate Analysis Centre for SIRGAS (IGS-RNAAC-SIR). DGFI Report No. 29. Munich. 110 p.


2007

Baez, J.C., de Freitas S.C.R, Drewes, H., Dalazoana, R., Luz, R.T. (2007). Deformations control for the Chilean part of the SIRGAS 2000 frame. Springer; IAG Symposia; Vol. 130: 660-664.

Corchete, V., M.C. Pacino. (2007). The first high-resolution gravimetric geoid for Argentina: GAR. Phys. Earth Planet. Inter. (161) 177-183, doi:10.1016/j.pepi.2007.01.012.

Dalazoana, R.; S.R.C. de Freitas; J.C. Baez; R.T. Luz (2007). Brazilian vertical datum monitoring - Vertical land movements and sea level variations. Springer; IAG Symposia; Vol. 130: 71-74.

Pacino, M.C.; D. Del Cogliano; G. Font; J. Moirano; P. Natali; E. Lauria; R. Ramos; S. Miranda (2007). Activities related to the materialization of a new vertical syste for Argentina. Springer; IAG Symposia; Vol. 130: 671-676.

Sánchez, L. (2007). Definition and realisation of the SIRGAS vertical reference system within a globally unified height system. Springer; IAG Symposia; Vol. 130: 638-645.

Sánchez L. (2007). Realización del nivel de referencia vertical para SIRGAS dentro de una definición global. Revista Análisis Geográficos Vol. 37, 18-25, Instituto Geográfico Agustín Codazzi (IGAC), Bogotá.

Tocho, C., G. Font, M.G. Sideris. (2007). A new high-precision gravimetric geoid model for Argentina. Springer, IAG Symposia, Vol. 130, 416-423.


2006

Brunini, C., Meza, A., Gende, M., Azpilicueta, F. (2006). South American regional maps of vertical TEC computed by GESA: a service for the ionospheric community. Presentado en IRI Workshop, Buenos Aires, Octubre 16-20.

Fortes, L.P.; E. Lauria; C. Brunini; A. Hernández; L. Sánchez; H. Drewes; W. Seemueller (2006). Current status and future developments of the SIRGAS project Wiss. Arb. Fachr. Verm.; Univ. Hannover; Nr. 258: 59-70.

Fortes, L.P., E. Lauría, C. Brunini, W. Amaya, L. Sánchez, H. Drewes, W. Seemüller (2006). SIRGAS: a geodetic enterprise Coordinates Magazine.


2005

Costa, S.M.A.C.; M.A.A. Lima (2005). Ajustamento da Rede Planimétrica Brasileira em SIRGAS2000. IV Colóquio Brasileiro de Ciências Geodésicas, Curitiba, PR. IBGE, Brasil.

Drewes, H., Kaniuth, K., Voelksen, C., Alves Costa, S.M., Souto Fortes, L.P. (2005). Results of the SIRGAS campaign 2000 and coordinates variations with respect to the 1995 South American geocentric reference frame. Springer; IAG Symposia; Vol. 128: 32-37.

Drewes, H., Heidbach, O. (2005). Deformation of the South American crust estimated from finite element and collocation methods. Springer; IAG Symposia; Vol. 128: 544-549.

Fortes, L.P.; E. Lauria; C. Brunini; A. Hernández; L. Sánchez; H. Drewes; W. Seemueller (2005). El proyecto internacional SIRGAS: estado actual y objetivos futuros 8th UN Reg. Cart. Conf. for the Americas, E/CONF.96/I.P. 16.

Kaniuth, K.; K. Stuber (2005). Apparent and real local movements of two co-located permanent GPS stations at Bogota; Colombia Zeitschr. fuer Verm. (130): 41-46.

Sánchez. L. (2005).  SIRGAS-GTIII, Reporte 2005. 39 p.

Dalazoana, R.; R.T. Luz, S.R.S. Lima, Fr. A. Miranda, A.S. Palmeiro, S.R.C. Freitas (2005). Controle vertical das RRNN e da posição Geocêntrica do Marégrafo no Porto de Imbituba. IV Colóquio Brasileiro de Ciências Geodésicas, Curitiba, PR, 2005.


2004

Luz, R.T.; S.R.C. Freitas, R. Dalazoana, F.A. Miranda, A.S. Palmeiro, K.P.Jamur (2004). Possibilidades da Integração de Dados Gravimétricos à Rede Altimétrica do SGB para Cálculo de Altitudes SIRGAS no Brasil. I SIMGEO, Recife, PE, 2004.

Resolución por la cual se adopta MAGNA-SIRGAS como sistema de referencia oficial en Colombia

Sánchez, L. (2004). Aspectos prácticos de la adopción del Marco Geocéntrico Nacional de Referencia MAGNA-SIRGAS como datum oficial de Colombia. Instituto Geográfico Agustín Codazzi. Bogotá, Colombia.

Sánchez, L. (2004). Adopción del Marco Geocéntrico Nacional de Referencia MAGNA-SIRGAS como datum oficial de Colombia. Instituto Geográfico Agustín Codazzi. Bogotá, Colombia.

Seemueller, W., Kaniuth, K., Drewes, H. (2004). Station positions and velocities of the IGS regional network for SIRGAS, DGFI Report No. 76.


2003

Drewes, H. (2003). Report 1999-2003 on the Geocentric Reference System for the Americas (SIRGAS). In: Travaux International Association of Geodesy, Vol. 32, 2 pp.

Mackern, M.V. (2003). Materialización de un sistema de referencia geocéntrico de alta precisión mediante observaciones GPS. Tesis doctoral.Universidad Nacional de Catamarca, Facultad de Tecnología y Ciencias Aplicada. San Fernando del Valle de Catamarca, Argentina. 246 p.

Marquez-Azua, B., Ch. DeMets. (2003). Crustal velocity field of Mexico from continuous GPS measurements, 1993 to June 2001: Implications for the neotectonics of Mexico. J. Geophys. Res. (108) No. B9, 12, 20pp.


2002

Brunini, C.; J. Moirano; H. Drewes; K. Kaniuth (2002). Improvements in the ellipsoidal heights of the Argentine reference frame. Springer; IAG Symposia; Vol. 124: 16-19.

Drewes, H.; L. Sánchez; D. Blitzkow; S. Freitas (2002). Scientific foundations of the SIRGAS vertical reference system. Springer; IAG Symposia; Vol. 124: 297-301.

Drewes, H., K. Kaniuth, W. Seemueller. (2002). GPS monitoring of the South American geocentric reference frame. Z. Angew. Geol. Sonderheft 1, 37-42, Hannover.

Freitas, S.R.C.; A.S. Medina, S.R.S. de Lima (2002). Associated problems to link South American vertical networks and possible approaches to face them. Springer; IAG Symposia; Vol. 124: 318-323.

Kaniuth, K., Tremel, H., Drewes, H., Stuber, K., Maturana, R., Parra, H. (2002). Processing of the SIRGAS 2000 GPS campaign at DGFI. Springer; IAG Symposia; Vol. 124: 312-317.

Kaniuth, K.; P. Haefele; L. Sánchez (2002). Subsidence of the permanent GPS station Bogota. Springer; IAG Symposia; Vol. 124: 56-59.

Kaniuth, K., Mueller, H., Seemueller, W. (2002). Displacement of space geodetic observatory Arequipa due to recent earthquakes. Zeitschr. fuer Verm. (127): 238-243.

Luz, R.T.; L.P.S. Fortes; M. Hoyer; H. Drewes (2002). The vertical reference frame for the Americas - The SIRGAS 2000 GPS campaign. Springer; IAG Symposia; Vol. 124: 302-305.

Natali, M.; C. Brunini; K. Kaniuth; H. Drewes (2002). Monitoring tide gauges benchmarks in Argentina by GPS. Springer; IAG Symposia; Vol. 124: 255-258.

Sánchez, L.; W. Martínez (2002). Approach to the new vertical reference system for Colombia Springer; IAG Symposia; Vol. 124: 27-33.

Sánchez, L. (2002). A reference surface for a unified height system in the northern part of South America. Springer; IAG Symposia; Vol. 125: 84-89.

Sánchez, L. (2002). Determinación de alturas físicas en Colombia. Studienarbeit. Institut für Planetare Geodäsie. Technische Universität Dresden. 36 p.

Seemueller,W., Kaniuth, K., Drewes, H. (2002). Velocity estimates of IGS RNAAC SIRGAS stations. Springer; IAG Symposia; Vol. 124: 7-10.

Seemueller, W., Drewes, H. (2002). Annual Report 2000 of RNAAC SIR IGS Techn. Rep., 2000; JPL Publ. 02-012: 141-144.


2001

Drewes, H. (2001). The unified height reference system for the Americas 7th UN Reg. Cart. Conf. for the Americas, E/CONF.93/INF.14.

Martín A., Y. Rodríguez, M. Hoyer, J. Borrego, E. Hurtado (2001). Impacto de la implantación del nuevo datum oficial de Venezuela (SIRGAS-REGVEN) en las actividades geodésicas de PDVSA EPM. Laboratorio de Geodesia Física y Satelital, Universidad del Zulia y PDVSA.

Tremel,H.; L. Sánchez; H. Drewes (2001). Procesamiento de la red GPS basica de Colombia: Marco Geocentrico Nacional - MAGNA. Revista Cartografica IPGH; No. 73: 7-23.


2000

Brunini, C.; J.F. Moirano, M.V. Mackern (2000). Comparación entre los marcos de referencia POSGAR'94 y POSGAR'98. Actas de la 20a reunión de Geofísica y Geodesia. Mendoza, Argentina, 21 - 29 septiembre.

Moirano, J. (2000). Materialización del Sistema de Referencia Terrestre Internacional en Argentina mediante observaciones GPS. Tesis Doctoral.Universidad Nacional de La Plata, Facultad de Ciencias Astronómicas y Geofísicas. La PLata, Argentina. 199 p.

Seemüller, W., H. Drewes. (2000). Annual Report 1999 of RNAAC SIRGAS. In: IGS 1999 Techni¬cal Reports, IGS CB, JPL Pasadena.


1999

Drewes, H. (1999). Report on the South American Geocentric Reference System (SIRGAS). In: O. Andersen (Ed.), Travaux International Association of Geodesy (31) 381-383.

Sánchez, L., W. Martínez, J. Florez (1999). Determinacion de un geoide gravimetrico para Colombia. IGeS Bulletin No.9, 87-97.

Schödlbauer, A.; J. Muños (1999). Geodätisches Referenzsystem PERU'96. Abschlußbericht zu dem von der Volkswagenstiftung gefördeten Projekt I/70939. UniBw-München. 65 p.

Sánchez,L.; W. Martinez (1999). Vinculacion de las alturas elipsoidales GPS al datum vertical clasico de Colombia. IGeS Bulletin, No. 9: 73-85.

Seemüller, W., H. Drewes. (1999). Annual Report 1998 of RNAAC SIRGAS. In: IGS 1998 Technical Reports, 133-134, IGS CB, JPL Pasadena.

Smith, D.A., H.J. Small. (1999). The CARIB97 high-resolution geoid height model for the Caribbean Sea. J. Geodesy (73) 1-9.


1998

Drewes, H. (1998). Time evolution of the SIRGAS reference frame. Springer, IAG Symposia, Vol. 118, 174-179.

Drewes,H.; H. Tremel; J.N. Hernández (1998). Adjustment of the new Venezuelan national GPS network within the SIRGAS reference frame. Springer; IAG Symposia; Vol. 118: 193-198.

Hoyer, M., S. Arciniegas, K. Pereira, H. Fagard, R. Maturana, R. Torchetti, H. Drewes, M. Kumar, G. Seeber. (1998). The definition and realization of the reference system in the SIRGAS project. Springer, IAG Symposia, Vol. 118, 167-173.

Kaniuth, K., Drewes, H., Stuber, K., Tremel, H., Moirano, J. (1998). Results of the SIRGAS 95 GPS network processing at DGFI/I. Springer; IAG Symposia; Vol. 118: 180-186.

Moirano, J.; C. Brunini; H. Drewes; K. Kaniuth (1998). Realization of a geodetic reference system in Argentina in connection with SIRGAS. Springer; IAG Symposia; Vol. 118: 199-204.

Seemüller, W., H. Drewes. (1998). Annual report 1997 of the RNAAC SIRGAS. In: IGS 1997 Technical Reports, 173-174, IGS CB, JPL Pasadena.

Seemueller,W. Drewes, H. (1998). The IGS regional associate analysis center for South America at DGFI/I. Springer; IAG Symposia; Vol. 118: 211-215.


1997

Drewes, H. (1997). Realisierung des geozentrischen Referenzsystems fuer Suedamerika (SIRGAS), DVW Schriftenreihe (28): 54-63.

Drewes, H.; L.P. Fortes; M.J. Hoyer; R. Barriga (1997) Status report of the SIRGAS project IGS Annual Report, 1996: 433-436.

SIRGAS Project Committee (1997) SIRGAS Final Report; Working Groups I and II IBGE,Rio de Janeiro; 96 p. (en español)


1995

Drewes, H. (1995). Sistema de Referencia Geocentrico para America del Sur. Proceedings IGS Workshop Densification of the IERS Terrestrial Reference Frame through regional GPS networks, A65-A73.

Fortes, L.P.; M.J. Hoyer; W.H. Subiza; H. Drewes (1995). The SIRGAS project IGS Annual Report 1994: 247-250.


1993

Cadess, H., H. Henneberg, E. Palleja, M. Pinch, (1993). Inter-American Geodetic Integration. Springer, IAG Symposia, Vol. 111, 3-15.

Kumar, M. (1993). A geocentric approach for the new South American horizontal datum Proceedings,Int. Conf. on Cartography - Geodesy; Maracaibo/Venezuela. Inst. Astronomia y Geodesia; Madrid (1): 59-65.