aditya joni. Prototype Sistem Kendali Keamanan Perlintasan Kereta Otomatis Menggunakan Gps Neo 6m. ZTR [Internet]. 2022 Oct. 23 [cited 2026 Feb. 4];4(2):7-10. Available from: https://ejournal.unibabwi.ac.id/index.php/Zetroem/article/view/2120