@article {1,
	title = {Taxonomy of Rubus ser. Discolores in the Czech Republic and adjacent regions},
	journal = {Preslia},
	volume = {77},
	year = {2005},
	pages = {1{\textendash}88},
	author = {Tr{\'a}vn{\'{\i}cek, B and Z{\'a}zvorka, Ji{\v r}{\'{\i}}
}
