@article {620,
	title = {Distribu{\c c}{\~a}o de Zimbros e Pom{\'o}ideas na Pen{\'\i}nsula Ib{\'e}rica},
	journal = {Collect. Bot. (Barcelona)Collect. Bot. (Barcelona)},
	volume = {7},
	year = {1968},
	pages = {449-481},
	author = {AmaralFranco,J.\&RochaAfonso,M.L.}
}
@article {629,
	title = {Erg{\"a}nzende studien an Petrocptis (Caryophyllaceae)},
	journal = {Collect. Bot. (Barcelona)Collect. Bot. (Barcelona)},
	volume = {7},
	year = {1968},
	pages = {787-797},
	author = {Merxm{\"u}ller,H.\&Grau,J.}
}
