Michael Beetz Nico von Hoyningen-Huene Jan Bandouch Bernhard Kirchlechner Suat Gedikli Alexis Maldonado Camera-based observation of football games for analyzing multi-agent activities. 42-49 2006 conf/atal/2006 AAMAS http://doi.acm.org/10.1145/1160633.1160638 db/conf/atal/aamas2006.html#BeetzHBKGM06