@article {41492,
	title = {Grizzly bear habitat effectiveness : assessing cumulative effects of human use in Jasper National Park. Proceedings of the Environmental Systems Research Institute International User Conference, Palm Springs, California},
	year = {1998},
	institution = {ESRI User Conference Proceedings},
	url = {http://gis.esri.com/library/userconf/proc98/proceed/TO200/PAP164/P164.HTM},
	author = {Purves, H. and Doering, C.}
}
