Mustakim, M., S. Gunawan, and D. R. Hartana. “EXPERIMENTAL STUDY ON THE EFFECT OF IGNITION ANGLE VARIATIONS AND FUEL OCTANE NUMBER ON THE PERFORMANCE OF 110CC UNDERBONE MOTORCYCLES”. KURVATEK, vol. 11, no. 1, Apr. 2026, pp. 37-44, doi:10.33579/krvtk.v11i1.6268.