Nurcahyadi, T., Wahyudi, W., Ruswanto, D. I., Ramadhani, F. M., Sidiq, B. and Handoko, W. T. (2017) “Performance of a 160 cc Four-Stroke Engine Using Non-Programmable Aftermarket CDI and Aftermarket Ignition Coil When Operating With Three Types of Gasoline”, Semesta Teknika, 20(2), pp. 125–131. doi: 10.18196/st.v20i2.3347.