K.G. Sadvakassova, A.M. Nurgazina, A.Z. Nurmagambetova и G.E. Kassenova 2022. ANALYSIS OF FINANCIAL PERFORMANCE AND SUSTAINABILITY IN KAZAKHSTANI AVIATION INDUSTRY IN PANDEMIC. «Вестник НАН РК». 1 (фев. 2022), 61–68. DOI:https://doi.org/10.32014/2022.2518-1467.239.