@article {8387,
	title = {Zur Soziologie von Apera interrupta},
	journal = {Tuexenia},
	volume = {6},
	year = {1986},
	month = {1986///},
	pages = {21 - 24},
	author = {I. Bank-Signon and E. Patzke}
}
@article {7881,
	title = {Beitrag zur Gramineenflora Nordrheinin-Westfalens: Apera interrupta},
	journal = {G{\"o}tt. Florist. Rundbr.},
	volume = {19},
	year = {1985},
	month = {1985///},
	pages = {46 - 53},
	author = {I. Bank-Signon and E. Patzke}
}
