Iva, Catlin, Di Maruddani, and Tarno . “Implementation of First Passage Time Method As a Warning System to Measure the Probability of Default in Bond”. International Journal Of Mathematics And Computer Research 12, no. 11 (November 13, 2024): 4566-4570. Accessed May 19, 2026. https://www.ijmcr.everant.org/index.php/ijmcr/article/view/822.