P.A. SATYANARAYANA, et al. “Quantitative Study on Production of Methyl Ester (biodiesel) from Castrol Oil and Nannochloropsis Salina (microalgae)”. International Journal of Pharma and Bio Sciences, vol. 10, no. 2, June 2019, pp. 45-53, doi:10.22376/ijpbs.2019.10.2.b45-53.