@inproceedings{TUW-119482, author = {Gerstbach, Gottfried and Pichler, Helmut}, title = {A Small CCD Zenith Camera (ZC-G1 - Developed for Rapid Geoid Monitoring in Difficult Projects}, booktitle = {Proceedings of the XIII. Nat. Conference of Yug. Astronomers}, year = {2003}, pages = {221--229}, publisher = {Proceedings of the XIII. Nat. Conference of Yug. Astronomers} }