Drewes, H.; Kaniuth, K.; Völksen, C.; Costa, S.; Fortes, L. P.: Results of the SIRGAS campaign 2000 and coordinates variations with respect to the 1995 South American geocentric reference frame. Springer Berlin Heidelberg 2005A window on the future of geodesy. Proceedings of the International Association of Geodesy. IAG General Assembly, Sapporo, Japan June 30 - July 11, 2003: 128.