Win TT, Khine MM. Synthesis and Characterization of CaO and KF Doped CaO (KF/CaO) Derived from Chicken Eggshell Waste as Heterogeneous Catalyst in Biodiesel Production. ASRJETS-Journal. 2017;38(2):134-151. Accessed November 6, 2025. https://asrjetsjournal.org/American_Scientific_Journal/article/view/3592