Nousheen Mustafa, Muhammad Zubair, Noor Uddin, Saqib Ali, Ali Haider, and Amin Badshah, “Catalytic Conversion of Castor Oil into Biodiesel by Tri-organotin(IV) Catalysts: Chromatographic and Spectroscopic Characterization with Theoretical Support”, PPASB, vol. 60, no. 2, pp. 225–232, Jun. 2023.