(a) Hans Helbaek в Prehistoric Investigations in Iraqi Kurdistan. P. 99–118; (b) Helbaek, “Commentary on the Phylogenesis of Triticum and Hordeum”, Economic Botany 20. 1966. P. 355; (c) Jane Renfrew, “A Note on the Neolithic Grain from Can Hasan”, AS XVIII, 1968. P. 55–56.
