<ref name="Fedchenko_1877">{{cite journal |first1=A. P. |last1=Fedchenko |year=1877 |title=Travels in Turkestan. Vol. 2, Div. 5, No. 7. [In Russian.] |url= |journal=Izvestiya Imperatorskago Obshchestva Lyubitelei Estestvoznaniya Antropologii i Etnografii pri Imperatorskom Moskovskom Universitete |publisher= |volume=26 |issue= |pages=i–iii, 1–20 (+1). |doi= }}</ref>