@inbook { KKAA11a, title = {Towards acquisition of semantics of places and events by multi-perspective analysis of geotagged photo collections}, booktitle = {Lecture Notes in Geoinformation and Cartography}, year = {2011}, author = {Kisilevich, Slava and Keim, Daniel A. and Andrienko, Natalia and Andrienko, Gennady} }