@article {38440,
	title = {Northward invading non-native vascular plant species in and adjacent to Wood Buffalo National Park},
	volume = {106},
	year = {1992},
	pages = {216-224},
	publisher = {The Canadian Field-Naturalist},
	author = {Wein, Ross W. and Wein, Gerold and Barret, Sieglinde and Cody, William J.}
}
