@unpublished{TUW-119201, author = {Fragner, Elisabeth and Weber, Robert}, title = {GNSS Beobachtungen zur Bestimmung Troposph{\"a}rischer Parameter {\"u}ber {\"O}sterreich}, year = {2002}, note = {talk: XI. Internationale Geod{\"a}tische Woche, Frankfurt am Main; 2002-10-15 -- 2002-10-17} }