KAIRBEKOV, Z.; DZHELDYBAEVA, I.; SUYMBAEVA, S.; SabitovaŠ. INCREASING THE REACTIVITY BY VARIOUS PHYSICO-CHEMICAL METHODS IN THE PROCESSES OF HYDROGENATION PROCESSING OF COAL. COMBUSTION AND PLASMA CHEMISTRY, v. 19, n. 4, p. 309-318, 25 dez. 2021.