Pares, E. D. ., . J. J. . Calamaya, R. D. . Calisan, L. D. . Misula, and I. C. G. . Talap. “Coin-Based Solar Charging Station With Security Features Using Optical Fingerprint Scanner and Solenoid Lock Chamber Box: Vol.3, No.1A”. Ascendens Asia Singapore – Bestlink College of the Philippines Journal of Multidisciplinary Research, vol. 3, no. 1A, Apr. 2024, https://ojs.aaresearchindex.com/index.php/aasgbcpjmra/article/view/12762.