@article {7493,
	title = {Geranium versicolor L., nieuw voor het flora-gebied te Alken (Limburg, Belgi{\"e})},
	journal = {Dumortiera},
	volume = {33},
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	month = {1985///},
	author = {Andriessen, L. and Nagels, C. and Vannerom, H.}
}
@article {7535,
	title = {De adventievenflora van in Belgi{\"e} ingevoerde mediterrane containerplanten},
	journal = {Dumortiera},
	volume = {97},
	year = {2009},
	month = {2009///},
	pages = {1 - 16},
	author = {Hoste, Ivan and Verloove, Filip and Nagels, C. and Andriessen, L. and Lambinon, Jacques}
}
