@article{TUW-120952, author = {Schuh, Harald and Heinkelmann, Robert}, title = {Grundlagen der modernen Astrometrie; ICRS-Katalog}, journal = {Der Sternenbote}, year = {2007}, volume = {50. Jahrgang, Vol. 614/2007-9}, number = {ISSN 0039-1271}, pages = {166--175} }