S. Sutrisno and H. Prasutiyon, “Environmental-Oriented Enhancement of B40 Biodiesel Combustion Efficiency Using Hybrid PtO₂–CeO₂ Catalyst and Neodymium N45 Magnetic System in Diesel Engines”, IJMEIR, vol. 11, no. 3, pp. 1005–1013, Sep. 2026.