Neupane, Milan, Shahil Sharma, Prajwal Dahal, Lochan Kendra Devkota, and Rabindra Prasad Dhakal. 2026. “Engine Performance and Emission Analysis of TiO2 Nanoparticle-Enhanced Waste Cooking Oil Biodiesel”. Himalayan Journal of Applied Science and Engineering 6 (2):59-73. https://doi.org/10.3126/hijase.v6i2.90242.