@article {,
	title = {Obsidian in the western Mediterranean: characterisation by neutron activation analysis and optical emission spectroscopy},
	journal = {Proceedings of the prehistoric society},
	volume = {42},
	year = {1976},
	note = {Illus., maps, bibliogrSource of data: Anthropological Index, Royal Anthropological Institute},
	pages = {85-110},
	keywords = {Archaeology, Europe, Western Mediterranean},
	author = {Hallam, B. R. and Warren, S. E. and Renfrew, Colin}
}