K.G. Sadvakassova, A.M. Nurgazina, A.Z. Nurmagambetova, и G.E. Kassenova. «ANALYSIS OF FINANCIAL PERFORMANCE AND SUSTAINABILITY IN KAZAKHSTANI AVIATION INDUSTRY IN PANDEMIC». Scientific Journal of Pedagogy and Economics, no. 1 (февраль 28, 2022): 61–68. просмотрено январь 29, 2026. http://89.250.84.46/bulletin-science/article/view/3164.