@inproceedings{TUW-119741, author = {Hobiger, Thomas and Todorova, Sonya and Schuh, Harald}, title = {Ionospheric parameters obtained by different space geodetic techniques during CONT02}, booktitle = {2004 General Meeting Proceedings}, year = {2004}, pages = {442--446}, note = {talk: IVS General Meeting, Ottawa, Canada; 2004-02-09 -- 2004-02-11} }