@article{TUW-120887, author = {Heinkelmann, Robert and B{\"o}hm, Johannes and Schuh, Harald}, title = {Effects of geodetic datum definition on the celestial and terrestrial reference frames determined by VLBI; 18th EVGA Working Meeting}, journal = {Geowissenschaftliche Mitteilungen}, year = {2007}, volume = {Heft Nr. 79}, number = {Vienna, Austria, April 12-15}, pages = {200--205} }