World explorer, Proceedings of the 2007 conference on Digital libraries , JCDL '07, 2007. ,
DOI : 10.1145/1255175.1255177
Mapping the world's photos, Proceedings of the 18th international conference on World wide web, WWW '09, 2009. ,
DOI : 10.1145/1526709.1526812
Tag ranking, Proceedings of the 18th international conference on World wide web, WWW '09, 2009. ,
DOI : 10.1145/1526709.1526757
STING : A statistical information grid approach to spatial data mining, VLDB, 1997. ,