@unpublished{TUW-120222, author = {Tanir, Emine and Heinkelmann, Robert and B{\"o}hm, Johannes and Schuh, Harald}, title = {Intra-technique Combination of VLBI Analysis Center Solutions by Using Variance Component Estimation}, year = {2005}, note = {talk: Geod{\"a}tische Woche, D{\"u}sseldorf, Germany; 2005-10-04 -- 2005-10-06} }