Silalahi, Lukman Medriavin. “A Prototype of Phase Lock Loop System on Communication Device for Motorcycle Riders”. Journal of Informatics and Communication Technology (JICT) 1, no. 1 (July 26, 2019): 36–48. Accessed April 24, 2024. https://ejournal.akademitelkom.ac.id/j_ict/index.php/j_ict/article/view/25.