@incollection{TUW-121089, author = {Behrend, Dirk and Schl{\"u}ter, W. and Schuh, Harald}, title = {International VLBI Service for Geodesy and Astrometry (IVS)}, booktitle = {International Association of Geodesy - Travaux 2007}, year = {2007}, publisher = {IAG (International Association of Geodesy)}, numpages = {7} }