@article{TUW-120885, author = {Heinkelmann, Robert and Schmidt, Martin and B{\"o}hm, Johannes and Schuh, Harald}, title = {Determination of water vapor trends from VLBI}, journal = {{\"O}sterreichische Zeitschrift f{\"u}r Vermessung und Geoinformation (VGI), begutachteter Spezialband}, year = {2007}, volume = {Heft 2}, number = {95. Jahrgang}, pages = {73--79} }