Kusumawardhani, Febriyati, and Dewi Hanggraeni. “Capital Reserve Calculation Analysis of Operational Risk in Submarine Cable Service Portfolio”. Gema Wiralodra 15, no. 1 (January 27, 2024). Accessed October 15, 2025. https://gemawiralodra.unwir.ac.id/index.php/gemawiralodra/article/view/602.