ClustTour: city exploration by use of hybrid photo clustering. - Symeon Papadopoulos; Christos Zigkolis; Stefanos Kapiris; Yiannis Kompatsiaris; Athena Vakali (ACM Multimedia, 2010)

City exploration by use of spatio-temporal analysis and clustering of user contributed photos. - Symeon Papadopoulos; Christos Zigkolis; Stefanos Kapiris; Yiannis Kompatsiaris; Athena Vakali (ICMR, 2011)