Dkhissi, Y., M. Alila, O. marghich, L. Hejjane, and E. Benjelloun. “The Synchronous Occurrence of Neuroendocrine Tumor and Gastrointestinal Stromal Tumor (GIST) at Gastric Site”. American Scientific Research Journal for Engineering, Technology, and Sciences, vol. 54, no. 1, Apr. 2019, pp. 92-96, https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/4620.