@unpublished{TUW-199560, author = {Schuh, Harald and Nilsson, Tobias and B{\"o}hm, Johannes and Heinkelmann, Robert}, title = {Space geodetic techniques used for estimating water vapor and climate trends}, year = {2011}, note = {invited; talk: AOGS 2011, Taipei, Taiwan; 2011-08-08 -- 2011-08-12} }