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M. LAUMULIN, “ INFLUENCE OF THE SHADOW ECONOMY ON THE FINANCIAL AND ECONOMIC DEVELOPMENT OF KAZAKHSTAN”, CAC, vol. 14, no. 1, pp. 157–167, Feb. 2013, Accessed: Jan. 09, 2025. [Online]. Available: http://13.200.237.241/CAC/index.php/cac/article/view/1573