@techreport{TUW-174544, author = {Grillmayer, Ekkehart and Weber, Robert and Navratil, Gerhard}, title = {Empfehlung f{\"u}r die Hinterlegung von Gebrauchskoordinaten mit homogenen geozentrischen Koordinaten}, institution = {E120 - Department of Geodesy and Geoinformation; Vienna University of Technology}, year = {2008} }