@article {118,
	title = {Key to the genera of the Lichinaceae},
	journal = {The Lichenologist},
	volume = {34},
	number = {1},
	year = {2002},
	pages = {39-62},
	chapter = {39},
	author = {Matthias Schultz and Burkhard B{\"u}del}
}
@article {105,
	title = {On the systematic position of the lichen genus Heppia},
	journal = {The Lichenologist},
	volume = {35},
	number = {2},
	year = {2003},
	pages = {151-156},
	chapter = {151},
	author = {Matthias Schultz and Burkhard B{\"u}del}
}
