2011-04-21 PhD Theses AustriaTechnical University of ViennaTechnical University of Graz CanadaUniversity of New Brunswitz - Technical ReportsUniversity of Calgary GermanyPublications of the German Geodetic Commission (Series C) NetherlandsTU Delft United States of AmericaOhio State University - Geodetic ScienceCalifornia Institute of Technology SwedenKTH Royal Institute of Technology