KURE, N.; DANIEL, I. H.; MACHU, B. U.; BELLO, I. A.; ANSNAWI, M. COMPARATIVE STUDY ON THE SYNTHESES OF CARBON NANOMATERIALS USING POLYETHYLENE AND RISK HUSK AS CARBON PRECURSOR. FUDMA JOURNAL OF SCIENCES, v. 4, n. 3, p. 731 - 734, 30 Sep. 2020.