Elhmri, Khaled M.A. Hussin, and Ashraf abdel-hamed Hegazi. “Unusual Foreign Bodies Causes Obstruction of the Esophagus in Dogs”. Al-Mukhtar Journal of Sciences, vol. 19, no. 1, Sept. 2008, pp. 51-60, doi:10.54172/mjsc.v19i1.810.