@article {963,
	title = {Le genre Strigula (Lichens) en Europe et en Macron{\'e}sie},
	journal = {Bibliotheca Lichenologica},
	volume = {90},
	year = {2004},
	pages = {3-96},
	chapter = {3},
	author = {Roux, C. and Serusiaux, E.}
}
@article {919,
	title = {The lichen genus Porina in Macaronesia with descriptions of two new species.},
	journal = {Lichenologist},
	volume = {39},
	year = {2007},
	pages = {15-33},
	author = {Serusiaux, E. and Berger, F. and Brand, M. and Coppins, B. J.}
}
