@article {1213,
	title = {A higher-order active contour model of a {\textquoteright}gas of circles{\textquoteright} and its application to tree crown extraction},
	journal = {PATTERN RECOGNITION},
	volume = {42},
	year = {2009},
	note = {UT: 000263431200011doi: 10.1016/j.patcog.2008.09.008},
	month = {2009///},
	pages = {699 - 709},
	isbn = {0031-3203},
	author = {Peter Horvath and Ian Jermyn and Zoltan Kato and Josiane Zerubia}
}
