Bayadilova B, Koichubayev A, Azylkanova S, Zhanabayeva Zh, Seitkhozhina J. Impact of investments on labour productivity in the chemical and petrochemical industry of the Republic of Kazakhstan. Sci Herald Uzhhorod Univ Ser Phys. 2024;(56):1706-1717. DOI: 10.54919/physics/56.2024.170jd6