@book {1433,
	title = {Foliicolous lichens I. A revision of the taxonomy of the obligately foliicolous, lichenized fungi},
	series = {Symbolae Botanicae Upsalienses},
	volume = {12},
	year = {1952},
	pages = {590},
	edition = {1},
	address = {Uppsala},
	author = {Rolf Santesson}
}
@book {1458,
	title = {The lichen flora of the United States},
	year = {1935},
	pages = {426},
	publisher = {University of Michigan Press},
	organization = {University of Michigan Press},
	address = {Ann Arbor},
	issn = {0472083333},
	author = {Bruce Fink and Joyce Hedrick}
}
@book {1420,
	title = {Lichens of the Alaskan Arctic Slope},
	year = {1979},
	pages = {314},
	publisher = {University of Toronto Press},
	organization = {University of Toronto Press},
	address = {Toronto},
	isbn = {0802054285},
	author = {Thomson, John W.}
}
@book {52,
	title = {The Lichen Genus Collema with Special Reference to the Extra-European Species},
	year = {1974},
	publisher = {ofters tryckeri ab, {\"O}stervala},
	organization = {ofters tryckeri ab, {\"O}stervala},
	address = {Stockholm},
	issn = {91-554-0250-x},
	author = {Degelius, Gunnar}
}
@book {1419,
	title = {Macrolichens of Denmark, Finland, Norway and Sweden},
	year = {1973},
	pages = {185},
	publisher = {Universitetsforlaget},
	organization = {Universitetsforlaget},
	isbn = {82000022625},
	author = {Eilif Dahl and Krog, Hildur}
}
@book {1443,
	title = {Lichens of New Zealand},
	year = {1972},
	pages = {193},
	publisher = {A.H. and A.W. Reed},
	organization = {A.H. and A.W. Reed},
	address = {Wellington},
	isbn = {0589006320},
	author = {William Martin and John Child}
}
@book {1483,
	title = {Flora of New Zealand : lichens},
	year = {1985},
	pages = {662},
	publisher = {P.D. Hasselberg, Govt. Printer},
	organization = {P.D. Hasselberg, Govt. Printer},
	address = {Wellington, New Zealand},
	isbn = {0477012663},
	author = {D.J. Galloway}
}
@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}
}
@book {1534,
	title = {The Lichens of Sweden and Norway},
	year = {1984},
	pages = {333},
	publisher = {Swedish Museum of Natural History},
	organization = {Swedish Museum of Natural History},
	address = {Stockholm},
	isbn = {9186510002},
	author = {Rolf Santesson}
}
@book {47,
	title = {The Lichen Flora of Great Britian and Ireland},
	year = {1992},
	publisher = {Natural History Museum Publications},
	organization = {Natural History Museum Publications},
	address = {London},
	author = {O.W. Purvis and D.M. Moore and B.J. Coppins and D.L. Hawksworth and P.W. James}
}
@book {628,
	title = {Studies in Pseudocyphellaria (lichens) III. The South American Species},
	year = {1992},
	publisher = {J. Cramer},
	organization = {J. Cramer},
	address = {Berlin and Stuttgart},
	author = {David J. Galloway}
}
@book {1211,
	title = {A key to the Microlichens of India, Nepal, and Sri Lanka},
	series = {Bibliotheca Lichenologica},
	volume = {40},
	year = {1991},
	author = {Awasthi, Dhar Dharani}
}
@book {651,
	title = {CRC Handbook of Lichenology},
	volume = {1},
	year = {1988},
	publisher = {CRC Press, Inc.},
	organization = {CRC Press, Inc.},
	address = {Boca Raton},
	isbn = {0-8493-3581-7},
	author = {Margalith Galun}
}
@book {778,
	title = {Hong Kong Lichens},
	year = {1988},
	publisher = {Urban Council},
	organization = {Urban Council},
	address = {Hong Kong},
	author = {S.L. Thrower}
}
@book {1509,
	title = {Lichens of the Ottawa region},
	series = {Ottawa Field-Naturalists{\textquoteright} Club},
	volume = {Special Publication no. 3},
	year = {1988},
	pages = {115},
	publisher = {National Museum of Natural Sciences},
	organization = {National Museum of Natural Sciences},
	edition = {2nd},
	address = {Ottawa},
	isbn = {0969025149},
	author = {Brodo, Irwin M}
}
@book {724,
	title = {Macrolichens of East Africa},
	year = {1988},
	publisher = {Henry Ling Ltd, The Dorset Press},
	organization = {Henry Ling Ltd, The Dorset Press},
	address = {Dorchester},
	isbn = {0-565-01039-5},
	author = {T.D.V. Swinscow and Krog, Hildur}
}
@book {1153,
	title = {Macrolichens of the Pacific Northwest},
	year = {1997},
	publisher = {Oregon State University Press},
	organization = {Oregon State University Press},
	address = {Corvallis},
	author = {Bruce McCune and Linda Geiser}
}
@book {1425,
	title = {Greenland Lichens},
	year = {1995},
	pages = {124},
	publisher = {Rhodos},
	organization = {Rhodos},
	issn = {8772456428},
	author = {Eric Steen Hansen and J{\o}rgen Andersen}
}
@book {755,
	title = {Macrolichens of the Northern Rocky Mountains},
	year = {1995},
	publisher = {Mad River Press},
	organization = {Mad River Press},
	address = {Eureka},
	issn = {0-916422-82-8},
	author = {Bruce McCune and Trevor Goward}
}
@book {1418,
	title = {The lichens and lichenicolous fungi of Sweden and Norway},
	year = {1993},
	pages = {240},
	issn = {919712558X},
	author = {Rolf Santesson}
}
@book {1290,
	title = {The Lichens of Italy: An annotated catalogue},
	series = {Museo Regionale Di Scienze Naturali},
	volume = {12},
	year = {1993},
	address = {Torino},
	issn = {88-86041-02-0},
	author = {P.L. Nimis}
}
@book {1453,
	title = {Lichens},
	series = {The new naturalist},
	year = {2000},
	pages = {288},
	publisher = {HarperCollins},
	organization = {HarperCollins},
	address = {London},
	isbn = {0002200821},
	author = {Oliver Gilbert}
}
@book {713,
	title = {American Arctic Lichens II. The Microlichens},
	year = {1997},
	publisher = {The University of Wisconsin Press.},
	organization = {The University of Wisconsin Press.},
	address = {Madison},
	issn = {299-13460-1},
	author = {Thomson, John Walter}
}
@book {680,
	title = {Cyanobacteria in Symbiosis},
	year = {2002},
	publisher = {Springer},
	organization = {Springer},
	issn = {1402007779, 9781402007774},
	author = {Amar N. Rai and Birgitta Bergman and Ulla Rasmussen}
}
@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}
}
@book {756,
	title = {Lichens 3},
	series = {Flora of Australia},
	volume = {58A},
	year = {2001},
	pages = {264},
	publisher = {Csiro},
	organization = {Csiro},
	issn = {0643067124},
	author = {Ediotor Patrick Mccarthy}
}
@book {689,
	title = {Lichens of Antarctica and South Georgia: a guide to their identification and ecology},
	year = {2001},
	publisher = {Cambridge University Press},
	organization = {Cambridge University Press},
	issn = {0521662419, 9780521662413},
	author = {Dag Olav {\O}vstedal and Ronald Ian Lewis Smith}
}
@book {53,
	title = {Lichens of North America},
	year = {2001},
	publisher = {Yale University Press},
	organization = {Yale University Press},
	issn = {0300082495},
	author = {Brodo, Irwin M and Sylvia Duran Sharnoff and Susan Laurie-Bourque and Stephen Sharnoff}
}
@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}
}
