Mahanggi, Alham A.K., et al. “Experimental Study on Effect of Injection Pressure to Spray Characteristics, Performance and Emissions of DieselEngine DI 20 C Using Biodiesel Fuel”. The International Journal of Mechanical Engineering and Sciences, vol. 2, no. 1, July 2025, pp. 18-25, doi:10.12962/j25807471.v2i1.5169 .