KIYAK, Gülten, et al. “Hemoperitoneum Secondary to Spontaneous Rupture of Metastatic Gastric Leiomyosarcoma of the Liver: Report of a Case”. Turkish Journal of Gastroenterology, vol. 17, no. 2, Jan. 2006, pp. 120-2, https://www.turkjgastroenterol.org/index.php/tjg/article/view/1531.