Iswantoro A, Ariana IM, Luqmananto BG, Maulana MF, Maulana S. Performance and Emission Analysis of Four-Stroke Diesel Engine Single Cylinder on Toroidal Piston Modification with B30 Fuel. IJMEIR [nternet]. 2025Jul.10 [cited 2025Dec.6];7(4):198-212. vailable from: https://journal.its.ac.id/index.php/ijmeir/article/view/5548