@unpublished{TUW-219173, author = {Plank, Lucia}, title = {VLBI Beobachtungen zu Satelliten}, year = {2013}, note = {talk: Retreat der Forschungsgruppe H{\"o}here Geod{\"a}sie 2013, Hohe Wand, Austria; 2013-05-13 -- 2013-05-15} }