WooChul Jung DaeRyung Lee Wonil Lee Stella Mitchell Jonathan Munson An Event Detection Service for Spatio-temporal Applications. 22-30 2006 conf/w2gis/2006 W2GIS http://dx.doi.org/10.1007/11935148_3 db/conf/w2gis/w2gis2006.html#JungLLMM06