Sami Ur Rahman, Fakhre Alam, and Wajid Ali. “Gun Detection in CCTV Images Using HAAR-Like Features: Gun Detection in CCTV Images Using HAAR-Like Features”. Proceedings of the Pakistan Academy of Sciences: A. Physical and Computational Sciences 59, no. 4 (November 22, 2022): 1–11. Accessed December 4, 2025. http://ppaspk.org/index.php/PPAS-A/article/view/981.