Nwogu, Chijioke, Monday Eze, and Charles Okunbor. “Design and Implementation of Access Door Control With Mo-Bile Alert”. International Journal of Engineering & Technology 9, no. 2 (May 7, 2020): 480–486. Accessed November 22, 2024. https://sciencepubco.com/index.php/ijet/article/view/30382.