Darmawan, Arief, and Fathurozzi Winjaya. “Anti-Collision Device (ACD) Electric Diesel Locomotive CC201 Series With Dual Tone Multiple Frequency (DTMF) Induction”. Jurnal Perkeretaapian Indonesia (Indonesian Railway Journal) 2, no. 2 (November 20, 2018): 95–103. Accessed June 4, 2026. https://jurnal.ppi.ac.id/jpi/article/view/51.