“Selective dissolution of vanadium(V) from spent petroleum catalysts by oxalic acid solution and its kinetic study”, J Min & Metal B Metallurgy, vol. 56, no. 1, pp. 127–133, Jan. 2020, Accessed: Jun. 11, 2026. [Online]. Available: https://test.aseestant.ceon.rs/index.php/jmm/article/view/22148