Dudin, M. N., V. D. Sekerin, A. E. Gorohova, V. I. Gayduk, and T. P. Danko. “Gold and Its Determining Role in Modernization and Technological Processes Related to Changing Geo-Economic Structure of the World”. International Journal of Economics and Financial Issues, vol. 6, no. 2S, June 2016, pp. 50-57, https://www.econjournals.com/index.php/ijefi/article/view/2531.