@unpublished{TUW-165772, author = {Steigenberger, Peter and B{\"o}hm, Johannes and Tesmer, V.}, title = {Comparison of GMF/GPT with VMF1/ECMWF and Implications for Atmospheric Loading}, year = {2008}, note = {talk: IGS Workshop, Miami; 2008-06-02 -- 2008-06-06} }