Ho Kim, Yong, and Gul Won Bang. “Development of Security Camera Combined Beacon Signal for Transmission of Disaster and Crime Situation As Well As Tracking Location”. International Journal of Engineering & Technology 7, no. 2.12 (April 3, 2018): 141–144. Accessed November 25, 2024. https://sciencepubco.com/index.php/ijet/article/view/11111.