S AL-Douri, A., and S. Gh A Al-kazaz. “The Effect of Nigella Sativa Oil (Black Seed) on the Healing of Chemically In-Duced Oral Ulcer in Rabbit (Experimen-Tal Study)”. Al-Rafidain Dental Journal, vol. 10, no. 1, Jan. 2010, pp. 151-7, doi:10.33899/rden.2010.45402.