@article{TUW-119497, author = {Vondrak, J. and Ron, C. and Weber, Robert}, title = {Combined VLBI/GPS series of precession-nutation and comparison with IAU 2000 model}, journal = {A {\&} A (Astronomy {\&} Astrophysics Manuscripts)}, year = {2003}, volume = {Vol. 397}, pages = {771--776} }