@book {1453,
	title = {Lichens},
	series = {The new naturalist},
	year = {2000},
	pages = {288},
	publisher = {HarperCollins},
	organization = {HarperCollins},
	address = {London},
	isbn = {0002200821},
	author = {Oliver Gilbert}
}
@article {54,
	title = {The Epiphytic Lichens on Quercus in Sardinia (Italy) and Their Value as Ecological Indicators},
	journal = {Englera},
	volume = {24},
	year = {2002},
	pages = {3-457},
	url = {http://www.jstor.org/stable/3776783},
	author = {Zedda, Luciana}
}
@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}
}
