M.K. Kazankapova, B.T. Yermagambet, A.M. Kalenova, A.B.Malgazhdarova, and G.K. Mendaliyev. “SYNTHESIS AND STUDY OF GRAPHENE AND ITS DERIVATIVES FROM SOLID COMBUSTIBLE FOSSILS”. Research Reviews, no. 3, Aug. 2023, https://ojs.publisher.agency/index.php/RR/article/view/1962.