Hamzeh Telfah. Sabri Mahmoud. Ayman Hammoudeh, “Effect of Thermal Treatment on the Catalytic Performance of Magnesium Oxide-Hydroxide Systems in Biodiesel Production from Jatropha Oil: Homogeneous versus Heterogeneous Catalytic Action”, jjc, vol. 13, no. 2, pp. 93-102, Jun. 2018.