@article {7508,
	title = {Floristische nota. Senecio squalidus},
	journal = {Dumortiera},
	volume = {6},
	year = {1977},
	month = {1977///},
	pages = {33 - 33},
	author = {De Ridder, M.}
}
@article {7509,
	title = {Adventieven en vogelzaad},
	journal = {Dumortiera},
	volume = {34-35},
	year = {1986},
	month = {1986///},
	pages = {143 - 145},
	author = {De Ridder, M.}
}
@article {dum188,
	title = {Cardaminopsis arenosa},
	journal = {Dumortiera},
	volume = {3},
	year = {1975},
	month = {12/1975},
	pages = {30},
	chapter = {30},
	author = {De Ridder, M.}
}
@article {93,
	title = {Adventieven en vogelzaad},
	journal = {Dumortiera},
	volume = {34-35},
	year = {1986},
	pages = {143-145},
	chapter = {143},
	author = {De Ridder, M.}
}
@article {92,
	title = {Floristische nota. Senecio squalidus},
	journal = {Dumortiera},
	volume = {6},
	year = {1977},
	pages = {33},
	chapter = {33},
	author = {De Ridder, M.}
}
