@unpublished{TUW-119723, author = {Schuh, Harald}, title = {VLBI - unverzichtbar f{\"u}r die moderne Geod{\"a}sie}, year = {2004}, note = {talk: Festveranstaltung Prof. J. Campbell, Geod{\"a}tisches Institut, Univ. Bonn; 2004-07-30} }