@article {723,
	title = {A Conspectus of the Lichen Genus Stereocaulon (Schreb.) Hoffm.},
	journal = {Journ. Hattori Bot. Lab.},
	volume = {43},
	year = {1977},
	month = {11/1977},
	pages = {191-355},
	author = {Ivan Mackenzie Lamb}
}
@article {638,
	title = {The Oxygen Tension within Lichen Thalli},
	journal = {New Phytologist},
	volume = {79},
	number = {3},
	year = {1977},
	month = {11/1977},
	pages = {649-657},
	chapter = {649},
	url = {http://www.jstor.org/stable/pdfplus/2433693.pdf},
	author = {J.W. Millbank}
}
@article {9,
	title = {The Genus <em>Zahlbrucknerella</em>},
	journal = {The Lichenologist},
	volume = {9},
	year = {1977},
	pages = {17-46},
	chapter = {17},
	author = {Aino Henssen}
}
@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}
}
