Santoso , D. A. . and Wijaya, A. (2020) “Grapari Information Technology Service Analysis of Telkomsel Salatiga Using ITIL V3 Domain Service Operation”, Journal of Information Technology Ampera, 1(3), pp. 144–154. Available at: https://journal-computing.org/index.php/journal-ita/article/view/30 (Accessed: 13October2026).