@article {7378,
	title = {Nieuwe groeiplaatsen van zeldzame planten in Belgi{\"e}. IV},
	journal = {Bull. Soc. Roy. Bot. Belg.},
	volume = {109},
	year = {1976},
	month = {1976///},
	pages = {29 - 41},
	author = {J.-E, De Langhe}
}
@article {7379,
	title = {Nieuwe groeiplaatsen van zeldzame planten in Belgi{\"e}. VII},
	journal = {Bull. Soc. Roy. Bot. Belg.},
	volume = {112},
	year = {1979},
	month = {1979///},
	pages = {21 - 34},
	author = {J.-E, De Langhe}
}
@article {7058,
	title = {Nieuwe groeiplaatsen van zeldzame planten in Belgi{\"e}. XIX},
	journal = {Belg. J. Bot},
	volume = {124},
	year = {1991},
	month = {1991///},
	pages = {115 - 118},
	author = {J.-E, De Langhe}
}
