I. A. Imran and S. M. Sani, “Prediction Model for GSM Signal Attenuation in the Abis Interface during Heavy Rainfall in Nigeria”, IJSBAR, vol. 23, no. 2, pp. 147–155, Jul. 2015, Accessed: Sep. 23, 2025. [Online]. Available: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/4098