Rozikin NA, Firdaus R. Effect Of Additional Variations Of Etanol Fuel On Exhaust Gas Emissions On Yamaha 125cc Motorcycles. acopen [Internet]. 2021Aug.14 [cited 2024Nov.21];40:10.21070/acopen.4.2021.1969. Available from: https://acopen.umsida.ac.id/index.php/acopen/article/view/1969