@article {46,
	title = {The Lichen Genus <em>Pterygiopsis</em> in Northern Europe},
	journal = {The Lichenologist},
	volume = {22},
	number = {3},
	year = {1990},
	pages = {213-217},
	chapter = {213},
	author = {P.M J{\o}rgensen}
}
@article {679,
	title = {The Macrolichen Flora of South Korea},
	journal = {The Bryologist},
	volume = {93},
	number = {2},
	year = {1990},
	pages = {105-160},
	url = {http://www.jstor.org/stable/pdfplus/3243619.pdf},
	author = {Park, Yun Sil}
}
@article {696,
	title = {New combinations and synonyms in the Lichinaceae},
	journal = {The Lichenologist},
	volume = {22},
	number = {2},
	year = {1990},
	pages = {137-147},
	author = {Aino Henssen and Per Magnus J{\o}rgensen}
}
@article {1508,
	title = {Rhizocarpon hensseniae, a cephalodiate lichen from the Northwest coast of North America},
	journal = {Bibliotheca Lichenologica},
	volume = {38},
	year = {1990},
	pages = {29-35},
	author = {Brodo, IM}
}
@article {697,
	title = {Studies in Pseudocyphellaria (Lichens) II. Ecuadorean species},
	journal = {The Lichenologist},
	volume = {22},
	number = {2},
	year = {1990},
	pages = {103-135},
	author = {David J. Galloway and L. Arvidsson}
}
@article {1342,
	title = {Studies in the lichen family Pannariaceae IV: The genus Degelia},
	journal = {Bibliotheca Lichenologica},
	volume = {38},
	year = {1990},
	pages = {253-276},
	author = {P.M J{\o}rgensen and P.W. James}
}
@article {699,
	title = {Studies on Micarea in Australasia I. Four New Species from Tasmania},
	journal = {The Lichenologist},
	volume = {22},
	number = {3},
	year = {1990},
	pages = {277-288},
	doi = {10.1017/S0024282990000317},
	author = {B.J. Coppins and G. Kantvilas}
}
@article {698,
	title = {Thermutopsis jamesii L., a new member to the Lichinaceae from Antigua},
	journal = {The Lichenologist},
	volume = {22},
	number = {3},
	year = {1990},
	pages = {253-259},
	author = {Aino Henssen}
}
