@inproceedings{TUW-120350, author = {Hobiger, Thomas and Ge, S. and Shum, C.K. and Potts, L. and Yi, Y. and Schuh, Harald and Bilitza, D.K. and Callahan, P. and Ping, J. and Katsumoto, K.}, title = {Comparison of TEC measurements of dual-frequency space geodetic techniques}, booktitle = {AGU 2004}, year = {2004}, note = {poster presentation: AGU Fall Meeting San Francisco, San Francisco; 2004-12-13 -- 2004-12-17} }