P. H. Davis. Lake Van and Turkish Kurdistan: A Botanical Journey. The Geographical Journal, Vol. 122, No. 2 (Jun., 1956), pp. 156–165. Published by: The Royal Geographical Society (with the Institute of British Geographers). Article DOI:10.2307/1790844
foodandhealth.ru
"Тан". Food and Health (vene). Vaadatud 12. mai 2018.