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	title = {New Lichens and Lichen Records from New Guinea},
	journal = {Willdenowia},
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	number = {1/2},
	year = {1991},
	pages = {221-256},
	chapter = {221},
	url = {http://www.jstor.org/stable/pdfplus/3996741.pdf},
	author = {Andr{\'e} Aptroot and Harrie J. M. Sipman}
}
@article {670,
	title = {The Lichens Reported from the Guianas before 1987},
	journal = {Willdenowia},
	volume = {17},
	number = {1/2},
	year = {1988},
	pages = {193-228},
	chapter = {193},
	url = {http://www.jstor.org/stable/pdfplus/3996217.pdf},
	author = {Hekking, W.H.A. and Harrie J. M. Sipman}
}
@article {643,
	title = {A Lichenological Comparison of the Paros and Santorini Island Groups (Aegean, Greece), with Annotated Checklist},
	journal = {Willdenowia},
	volume = {29},
	number = {1/2},
	year = {1999},
	month = {12/1999},
	pages = {239-297},
	chapter = {239},
	url = {http://www.jstor.org/stable/3997305},
	author = {Harrie J. M. Sipman and Thomas Raus}
}
@article {644,
	title = {An Inventory of the Lichen Flora of kalimnos and Parts of Kos (Dodecanisos, Greece)},
	journal = {Willdenowia},
	volume = {32},
	number = {2},
	year = {2002},
	month = {12/2002},
	pages = {351-392},
	chapter = {351},
	url = {http://www.jstor.org/stable/pdfplus/3997642.pdf},
	author = {Harrie J. M. Sipman and Thomas Raus}
}
@article {647,
	title = {The Lichens of Mainland Yemen},
	journal = {Willdenowia},
	volume = {32},
	number = {1},
	year = {2002},
	pages = {127-135},
	chapter = {127},
	url = {http://www.jstor.org/stable/pdfplus/3997512.pdf},
	author = {Harrie J. M. Sipman}
}
@article {7,
	title = {A First Assessment of the Ticolichen Biodiversity Inventory in Costa Rica: The Genus Dictyonema (Polyporales: Atheliaceae).},
	journal = {The Bryologist},
	volume = {107},
	number = {2},
	year = {2004},
	pages = {242-249},
	chapter = {242},
	author = {Jose Luis Chaves and Enia Navarro and Robert L{\"u}cking and Harrie J. M. Sipman and Loengrin Uma{\~n}a}
}
@article {1566,
	title = {Lichens of two nature reserves in NE Iran},
	journal = {Willdenowia},
	volume = {39},
	number = {1},
	year = {2009},
	pages = {199-202},
	url = {http://www.ingentaconnect.com/content/bgbm/will/2009/00000039/00000001},
	author = {Mahroo Haji Moniri and Harrie J. M. Sipman}
}
@article {115,
	title = {The lichen <em>Fuscopannaria leucosticta </em> (Tuck.) P.M. J{\o}rg. found in the tropics},
	journal = {The Lichenologist},
	volume = {39},
	number = {3},
	year = {2007},
	pages = {305-307},
	chapter = {305},
	doi = {10.1017/S0024282907006767},
	author = {Per M. J{\o}rgensen and Harrie J. M. Sipman}
}
