@article {8237,
	title = {Eupatorium rugosum Houtt. et Echinops commutatus Jaratzka adventices en Belgique},
	journal = {Rev. Vervi{\'e}t. Hist. Nat},
	volume = {16},
	year = {1959},
	month = {1959///},
	pages = {22 - 24},
	author = {A. Lawalr{\'e}e}
}
@article {A.Lawalree1959,
	title = {Eupatorium rugosum Houtt. et Echinops commutatus Jaratzka adventices en Belgique},
	journal = {Rev. Vervi{\'e}t. Hist. Nat},
	volume = {16},
	year = {1959},
	pages = {22{\textendash}24},
	author = {A. Lawalr{\'e}e}
}
