@unpublished{TUW-196719, author = {Tierno Ros, Claudia and B{\"o}hm, Johannes and Schuh, Harald}, title = {Use of GNSS-derived TEC maps for VLBI observations}, year = {2011}, note = {poster presentation: 20th EVGA Meeting, Bonn, Germany; 2011-03-29 -- 2011-03-30} }