Bosworth, Clifford Edmund (1996). The New Islamic Dynasties: A Chronological and Genealogical Manual. Columbia University Press. pp. 199–200. ISBN978-0-231-10714-3. https://books.google.com/books?id=2O_BQs6Sro0C&pg=PA199. "pp 199-200(Eldiguizds or Ildegizds): "The Elgiguzids or Ildegizds were a Turkish Atabeg dynasty who controlled most of Azerbaijan(apart from the region of Maragha held by another Atabeg line, the Ahamadilis), Arran and northern Jibal during the second half the twelfth century when the Great Seljuq Sultane of Western Persia and Iraq was in full decay and unable to prevent the growth of virtually independent powers in the province", pp 199-200: "Eldiguz (Arabic-Persian sources write 'y.l.d.k.z) was originally a Qipchaq military slave", pp199-200: "The historical significance of these Atabegs thus lies in their firm control over most of north-western Persia during the later Seljuq periodand also their role in Transcaucasia as champions of Islamagainst the resurgent Bagtarid Kings". pp 199: "In their last phase, the Eldiguzids were once more local rulers in Azerbaijan and eastern Transcaucasia, hard pressed by the aggressive Georgians, and they did not survive the troubled decades of the thirteenth century"."
Paul A. Blaum (2005). Diplomacy gone to seed: a history of Byzantine foreign relations, A.D. 1047-57. International Journal of Kurdish Studies. (Online version)
Encyclopaedia Iranica. K. A. Luther «Atabakan-e Adarbayjan»: Sources such as Ḥosaynī’s Aḵbār (p. 181 and passim) make it clear that members of the family always considered Naḵǰavān their home base.
