Mohamed Hafiz, Muhammad Hadi Syazwan, and Mohamad Fauzi Zakaria. “A Drone-Based Parking Enforcement System Using Ardu Pilot and Raspberry Pi 4”. Evolution in Electrical and Electronic Engineering 6, no. 2 (October 28, 2025): 135–143. Accessed August 15, 2026. https://periodical.uthm.edu.my/index.php/eeee/article/view/21345.