@article {36524,
	title = {Notes on the sizes of largest thalli of three species of Rhizocarpon (subgenus Rhizocarpon) at a rockslide in the Canadian Rocky Mountains},
	volume = {21},
	year = {1989},
	pages = {185-187},
	publisher = {Arctic and Alpine Research},
	author = {John, Elizabeth A.}
}
