@article {8006,
	title = {La flore adventice de la r{\'e}gion de Verviers},
	journal = {Lejeunia},
	volume = {6},
	year = {1942},
	month = {1942///},
	pages = {99 - 119},
	author = {A. Vis{\'e}}
}
@article {7373,
	title = {Florule adventice de la vall{\'e}e de la Vesdre},
	journal = {Bull. Soc. Roy. Bot. Belg.},
	volume = {90},
	year = {1958},
	month = {1958///},
	pages = {287 - 305},
	author = {A. Vis{\'e}}
}
