@phdthesis{TUW-120790, author = {Biljecki, Zvonko}, title = {Concept and Implementation of Croatian Topographic Information System - CROTIS}, school = {Institut f{\"u}r Photogrammetrie und Fernerkundung}, year = {2007}, url = {http://publik.tuwien.ac.at/files/PubDat_120790.pdf} }