@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}
}
@article {709,
	title = {Two aquatic cyanolichens, new to the Azores},
	journal = {The Lichenologist},
	volume = {30},
	number = {6},
	year = {1998},
	pages = {593-595},
	author = {Per Magnus J{\o}rgensen and P.W. James}
}
