@unpublished{TUW-120064, author = {Heinkelmann, Robert and Schuh, Harald}, title = {Space Geodetic Techniques}, year = {2005}, note = {poster presentation: Summer Course: Space Geodetic Techniques, Introduction to Space Geodetic Techniques, Karadeniz Technical University, Trabzon, T{\"u}rkei; 2005-09-21 -- 2005-09-28} }