Ahmmed, Hd. Razu, et al. “Preparation and Physico-Chemical Properties Evaluation of Biodiesel from Pithraj (Aphanamixis Polystachya)Seeds Available in Bangladesh”. Chemical Engineering Research Bulletin, vol. 22, no. 1, June 2021, pp. 43-48, doi:10.3329/cerb.v22i1.54298.