@article {45459,
	title = {Lichen trimlines in northern Alberta : establishment, growth rates, and historic water levels},
	volume = {107},
	year = {2004},
	pages = {429-440},
	publisher = {The Bryologist},
	url = {http://www.bioone.org/archive/0007-2745/108/1/pdf/i0007-2745-108-1-50.pdf},
	author = {Timoney, Kevin P. and Marsh, Janet}
}
