@book {683,
	title = {American Arctic Lichens I. The Macrolichens},
	year = {1984},
	publisher = {Columbia University Press},
	organization = {Columbia University Press},
	issn = {0231058888, 9780231058889},
	author = {Thomson, John Walter and Bethia Brehmer}
}
@article {679,
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	volume = {93},
	number = {2},
	year = {1990},
	pages = {105-160},
	url = {http://www.jstor.org/stable/pdfplus/3243619.pdf},
	author = {Park, Yun Sil}
}
@book {1453,
	title = {Lichens},
	series = {The new naturalist},
	year = {2000},
	pages = {288},
	publisher = {HarperCollins},
	organization = {HarperCollins},
	address = {London},
	isbn = {0002200821},
	author = {Oliver Gilbert}
}
@book {50,
	title = {Lichen Flora of the Greater Sonoran Desert Region},
	volume = {1},
	year = {2001},
	publisher = {Lichens Unlimited},
	organization = {Lichens Unlimited},
	address = {Tempe},
	author = {Thomas H. Nash_III and Bruce D. Ryan and Corinna Gries and Frank Bungartz}
}
@article {732,
	title = {Index Fungorum [taxonomy information]},
	year = {2008},
	url = {http://www.indexfungorum.org/Names/Names.asp}
}
@book {1154,
	title = {The Macrolichens of New England},
	series = {Memoirs of the New York Botanical Garden},
	volume = {96},
	year = {2007},
	publisher = {The New York Botanical Garden Press},
	organization = {The New York Botanical Garden Press},
	address = {China},
	author = {James W. Hinds and Patricia L. Hinds}
}
