E. S. Nugraha, D. Girawan, N. Agustanti, Y. Wahyudi, and M. B. Bestari, “Role of Radial Endoscopic-ultrasound (EUS) to Establish Diagnosis of Undetermined Causes of Obstructive Jaundice: A Case Series”, InaJGHE, vol. 20, no. 3, pp. 189–193, July 2020.