Sundkler and Steed, 28–30.

Jenkins, 109.

Там же, 98–99.

Crone and Cook, Hagarism, 114. См. также F.Micheau, “Eastern Christianities (Eleventh to Fourteenth Century): Copts, Melkites, Nestorians and Jacobites”, in Angold (ed.), 373–403, at 376, 384–386, 398.