@incollection{TUW-119305, author = {Weber, Robert and Nastula, J. and Kolaczek, B. and Salstein, David A.}, title = {Analysis of Rapid Variations of Polar Motion Determined by the GPS}, booktitle = {IAG 2001 Scientific Assembly Proceedings}, year = {2002}, pages = {445--450}, organization = {J. Adam, K.P.Schwarz}, publisher = {IAG-Symposia}, address = {Springer} }