@unpublished{TUW-199825, author = {Weber, Robert and Hugentobler, Urs and Neilan, Ruth E.}, title = {IGS M-GEX - The IGS Multi-GNSS Global Experiment}, year = {2011}, note = {talk: 3rd International Colloquium - Scientific and Fundamental Aspects of the Galileo Programme, Kopenhagen; 2011-08-31 -- 2011-09-02} }