@book{TUW-171994, author = {Gartner, Georg and Mok, Esmond}, title = {Special Issue: 4th International Conference on LBS and TeleCartography Hong Kong, Vol. 2, Nr. 1}, publisher = {Taylor {\&} Francis}, year = {2008}, series = {Journal on Location Based Services}, editor = {Raper, Jonathan and Gartner, Georg and Karimi, Hassan and Rizos, Chris}, issn = {1748-9725} }