@book {3393,
	title = {Lichen Flora of the Greater Sonoran Desert Region},
	volume = {2},
	year = {2001},
	publisher = {Arizona State University},
	organization = {Arizona State University},
	address = {Tempe, Arizona, USA},
	author = {Nash, T.H. and Ryan, B.D. and Gries, C. and Bungartz, F.}
}
