@article{TUW-120864, author = {Todorova, Sonya and Schuh, Harald and Hobiger, Thomas and Hernandez-Pajares, Manuel}, title = {Global models of the ionosphere obtained by integration of GNSS and satellite altimetry data}, journal = {{\"O}sterreichische Zeitschrift f{\"u}r Vermessung und Geoinformation (VGI), begutachteter Spezialband}, year = {2007}, volume = {Heft 2}, number = {95. Jahrgang}, pages = {80--89} }