@conference {Horvath07d,
	title = {A {\textquoteright}gas of Circles{\textquoteright} Phase Field Model and its Application to Tree Crown Extraction},
	booktitle = {Proceedings of the European Signal Processing Conference (EUSIPCO)},
	year = {2007},
	month = {2007},
	type = {Conference paper},
	address = {Poznan, Poland},
	author = {Peter Horvath and Ian Jermyn},
	editor = {Marek Domanski and Ryszard Stasinski and Maciej Bartkowiak}
}
