A. Inayat, C. Ghenai, D. Hammad, S. Almarzooqi, R. Tariq, F. Jamil, A. Bokhari, M. Ayoub, Optimization of Biodiesel Production from Neem Oil using KOH Supported with Activated Carbon, Chemical Engineering Transactions. 81 (2020) 1051-1056. doi:10.3303/CET2081176.