@book {8573,
	title = {Monograph of the genus Digitaria. Universitaire Pers},
	year = {1950},
	month = {1950///},
	publisher = {Leiden: XXI},
	organization = {Leiden: XXI},
	author = {J.Th, Henrard}
}
@book {8539,
	title = {Notizen {\"u}ber Wanderpflanzen. I. Lepidium densiflorum Schrad. und Lepidium virginicum L},
	year = {1950},
	month = {1950///},
	pages = {77 - 93},
	publisher = {Mitteilungen der Floristisch-soziologischen Arbeitsgemeinschaft N. F},
	organization = {Mitteilungen der Floristisch-soziologischen Arbeitsgemeinschaft N. F},
	author = {H. Meissner}
}
