@article {39212,
	title = {Changes in sub-alpine tree distribution in western North America : a review of climatic and other causal factors},
	volume = {4},
	year = {1994},
	pages = {89-100},
	publisher = {The Holocene},
	url = {http://hol.sagepub.com/cgi/reprint/4/1/89},
	author = {Rochefort, Regina M. and Little, Ronda L. and Woodward, Andrea and Peterson, David L.}
}
