@unpublished{TUW-184355, author = {Schuh, Harald}, title = {Present study and future perspectives of Very Long Baseline Interferometry}, year = {2009}, note = {talk: Universit{\"a}t f{\"u}r Architektur, Bauingenieurwesen und Geod{\"a}sie (Feierlichkeiten anl{\"a}{\ss}lich der {\"U}berreichung der Ehrendoktorw{\"u}rde), Sofia, Bulgarien; 2009-10-28} }