@inproceedings{TUW-119921, author = {Weber, Robert}, title = {The IGS GNSS Working Group - Charter and Plans}, booktitle = {Proceedings of IGS Analysis Workshop 2004}, year = {2005}, organization = {M. Meindl}, publisher = {IGS Analysis Workshop 2004}, address = {AIUB, Bern, Schweiz}, numpages = {4} }