@inbook {3342,
	title = {Evolution of hierarchical variation patterns under domestication and their taxonomic treatment},
	booktitle = {Infraspecific classification of wild and cultivated plants},
	year = {1986},
	pages = {191-201},
	publisher = {Clarendon Press},
	organization = {Clarendon Press},
	address = {Oxford},
	keywords = {CLASSIFICATION, CULTIVATED PLANTS, DOMESTICATION, EVOLUTION, INFRASPECIFIC CLASSIFICATION},
	author = {Pickersgill, B.},
	editor = {Styles, B. T.}
}
