@article{TUW-190530, author = {B{\"o}hm, Johannes and Retscher, G{\"u}nther}, title = {Geodesy for Planet Earth - Session 4 Positioning and Applications}, journal = {Zeitschrift f{\"u}r Geod{\"a}sie, Geoinformation und Landmanagement (zfv)}, year = {2009}, volume = {6}, number = {134. Jahrgang}, pages = {377--378} }