@article {7650,
	title = {A contribution to the study of the evolution of Hesperis series Matronales Cv_l. emend. Dvo_{\'a}k},
	journal = {Feddes Repert},
	volume = {73},
	year = {1966},
	month = {1966///},
	pages = {94 - 99},
	author = {F. Dvo_{\'a}k}
}
@article {7651,
	title = {Hybrids of the genus Hesperis},
	journal = {Feddes Repert},
	volume = {75},
	year = {1967},
	month = {1967///},
	pages = {67 - 88},
	author = {F. Dvo_{\'a}k}
}
@article {7652,
	title = {Infrageneric classification of Hesperis L},
	journal = {Feddes Repert},
	volume = {84},
	year = {1973},
	month = {1973///},
	pages = {259 - 271},
	author = {F. Dvo_{\'a}k}
}
