Pertiwi, Dian Elok, and Lien Herliani Kusumah. “Identification of Operational Risk of Embedded Subscriber Identity Module (SIM) Technology Based on ISO 31000: Systematic Literature Review”. SINERGI 27, no. 2 (April 14, 2023): 193–200. Accessed June 11, 2026. https://publikasi.mercubuana.ac.id/index.php/sinergi/article/view/16042.