@article {635,
	title = {Lichen Physiology. XI. The Role of the Alga in Determining the Pattern of Carbohydrate Movement Between Lichen Symbionts},
	journal = {New Phytologist},
	volume = {67},
	number = {3},
	year = {1968},
	pages = {469-486},
	chapter = {469},
	url = {http://www.jstor.org/stable/pdfplus/2430075.pdf},
	author = {Richardson, D.H.S. and D. Jackson Hill and D.C. Smith}
}
@article {1245,
	title = {Ontogenetisch-systematische Studie {\"u}ber Erioderma im Vergleich mit anderen cyanophilen Flechtengattungen},
	journal = {Bibliotheca Lichenologica},
	volume = {6},
	year = {1977},
	author = {Gerhard Keuck}
}
@article {130,
	title = {Nitrogen Metabolism in Lichens. VII. Nitrogenase Activity and Heterocyst Frequency in Lichens with Blue-Green Phycobionts},
	journal = {New Phytologist},
	volume = {75},
	number = {2},
	year = {1975},
	pages = {239-244},
	chapter = {239},
	url = {http://www.jstor.org/stable/2430715},
	author = {C.J.B. Hitch and J.W. Millbank}
}
@article {81,
	title = {<em>Solorina simensis </em> and <em>S. saccata</em>},
	journal = {The Lichenologist},
	volume = {18},
	number = {1},
	year = {1986},
	pages = {57-62},
	author = {Krog, Hildur and T.D.V. Swinscow}
}
@article {1202,
	title = {The lichen flora of the outer Hvalfj{\"o}rdur area in West Iceland},
	journal = {Acta Botanica Islandica},
	volume = {8},
	year = {1985},
	pages = {31-50},
	chapter = {31},
	author = {H{\"o}rdur Kristinsson}
}
@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 {1450,
	title = {Lichenized, lichenicolous and other fungi from North and North-East Greenland},
	journal = {Folia Cryptogamica Estonica},
	volume = {37},
	year = {2000},
	pages = {1-20},
	url = {http://www.ut.ee/ial5/fce/FCE_eLibrary/FCEeBooks/FCE37eBook.pdf},
	author = {Vagn Alstrup and Eric Steen Hansen and Fred J.A. Daniels}
}
@book {1453,
	title = {Lichens},
	series = {The new naturalist},
	year = {2000},
	pages = {288},
	publisher = {HarperCollins},
	organization = {HarperCollins},
	address = {London},
	isbn = {0002200821},
	author = {Oliver Gilbert}
}
@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}
}
