Glazyrina, Irina, and Sergey Lavlinskii. “Transaction Costs and Prospects for Public-Private Partnership in the Russian Mineral Resourse Sector”. International Journal of Economics and Financial Issues, vol. 7, no. 1, Jan. 2017, pp. 403-1, https://econjournals.net.tr/index.php/ijefi/article/view/3584.