Apriyanti, Syafrida Dwi, et al. “Seismicity Analysis of the Southern Java Region (2020-2024) Based on the B-Value and a-Value Using the Maximum Likelihood Method”. Journal of Natural Sciences and Mathematics Research, vol. 11, no. 2, Dec. 2025, pp. 164-73, doi:10.21580/jnsmr.v11i2.27765.