R.N. NASIROV. DETERMINATION OF VANADIUM IN THE PRECASPIAN REGION’S OIL BY THE EPR-SPECTROSCOPY METHOD. Academic Scientific Journal of Chemistry, [S. l.], n. 5, p. 125–131, 2022. DOI: 10.32014/2018. 2518-1491.16. Disponível em: https://journals.nauka-nanrk.kz/chemistry-technology/article/view/3639. Acesso em: 5 дек. 2025.