Muhammad Ali Al-Olaya, A. “- The Policy of the Ottoman Empire towards the Kurdish Clans in Kirkuk and Its Outskirts from 1887 until 1909 an Analytical Documentary Study”. Adab Al-Rafidayn, vol. 35, no. 41.1, Apr. 2005, pp. 441-74, doi:10.33899/radab.2005.166595.