@inproceedings{inproceedings95160bf3, title = {Influence of the ionosphere model on the solution of a vlbi geodetic experiment}, author = {Petit, G and Lestrade, J F and Boucher, C and Biraud, F and Rius, A and Nothnagel, A and Kaufmann, P}, year = {1988}, publisher = {Kluwer Academic}, booktitle = {Symposium of the International Astronomical Union} }