Extraction of vanadium from pet-coke gasification cinder: Part 1 leaching kinetics studies in sulphuric acid medium. J Min & Metal B Metallurgy [Internet]. 2025 Nov. 24 [cited 2026 Jun. 11];61(3):333-44. Available from: https://test.aseestant.ceon.rs/index.php/jmm/article/view/57619