Usman, Imam Hidayat, et al. “Assessment of AEKF SoC Estimation in a LiFePO₄ Battery System With Relay Switching Control”. Protek : Jurnal Ilmiah Teknik Elektro, vol. 13, no. 2, May 2026, pp. 91-97, doi:10.33387/protk.v13i2.11204.