Abdülkadir BEDİRLİ, Erdoğan M. SÖZÜER, Zeki YILMAZ, Yaşar YEŞİLKAYA, and Cuma YILDIRIM, “Surgical management of perforated dudenal ulcers”, Turkish Journal of Gastroenterology, vol. 8, no. 4, pp. 447–453, Jul. 2019.