@article {8357,
	title = {Molecular systematics of Echinops L. (Asteraceae, Cynareae): a phylogeny based on ITS and trnL-trnF sequences with emphasis on sectional delimitation},
	journal = {Taxon},
	volume = {59},
	year = {2010},
	month = {2010///},
	pages = {698 - 708},
	author = {S{\'a}nchez-Jim{\'e}nez, I. and Lazkov, G.A.}
}
@article {8175,
	title = {Combining numerical and traditional approaches to classify Echinops sphaerocephalus invaded communities in the Czech Republik},
	journal = {Phytocoenologia},
	volume = {39},
	year = {2009},
	month = {2009///},
	pages = {253 - 264},
	author = {Pet{\v r}{\'\i}k, P. and Dost{\'a}lek, J. and Neuh{\"a}uslov{\'a}, Z.}
}
