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	month = {11/1978},
	pages = {1-124},
	isbn = {91-546-0241-6},
	issn = {0078-5237},
	author = {Per M. J{\o}rgensen}
}
@article {1348,
	title = {The lichen family Pannariaceae in Europe},
	journal = {Opera Botanica},
	volume = {45},
	year = {1978},
	pages = {49},
	author = {Per M. J{\o}rgensen}
}
@article {1349,
	title = {The lichen family Pannariaceae in Europe},
	journal = {Opera Botanica},
	volume = {45},
	year = {1978},
	pages = {70},
	author = {Per M. J{\o}rgensen}
}
@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 {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}
}
