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), сс. 61–68. doi: 10.32014/2022.2518-1467.239.