Vozhdestva i plemena strany Ḳhāshid i Bakīl : obshchie tenden︠t︡sii i faktory ėvol︠i︡u︠t︡sii so︠t︡sialʹno-politicheskikh sistem severo-vostochnogo Ĭemena (X v. do n.ė. -- XX v. n.ė.) - Korotaev, A. V. (IV RAN, 1998)