B.T. Yermagambet, M.K. Kazankapova, A.T. Nauryzbayeva и Zh.M. Kassenova 2021. SYNTHESIS OF CARBON NANOFIBERS BASED ON HUMIC ACID AND POLYACRYONITRILE BY ELECTROSPINNING METHOD. Известия НАН РК. Серия химии и технологии. 3 (июн. 2021), 104–110.