@unpublished{TUW-209999, author = {M{\"o}ller, Gregor}, title = {Analyse des GNSS Referenzstationsnetzes EPOSA - Vergleich beider Zentralen ({\"O}BB und Wienstrom)}, year = {2012}, note = {invited; talk: EPOSA Meeting Herbst 2012, Vienna, Austria; 2012-09-21} }