@article {1347,
	title = {The lichen family Pannariaceae in Europe},
	journal = {Opera Botanica},
	volume = {45},
	year = {1978},
	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}
}
@article {1421,
	title = {A monograph of the lichen genus Coccocarpia},
	journal = {Opera Botanica},
	volume = {67},
	year = {1982},
	pages = {1-96},
	isbn = {87-7001-137-0},
	author = {Lars Arvidsson}
}
