Kalymbetova, A., Z. Zhetibayev, R. Kambar, Z. Ranov, and B. Izatullayeva. “The Effect of Oil Prices on Industrial Production in Oil-Importing Countries: Panel Cointegration Test”. International Journal of Energy Economics and Policy, vol. 11, no. 1, Dec. 2020, pp. 186-92, https://econjournals.com/index.php/ijeep/article/view/10439.