Finogenova, Y., D. Domaschenko, O. Boyko, and V. Krylov. “Capital Outflow in the Countries Exporting Oil and Gas As a Deterrent to Their Economic Development”. Research Papers in Economics and Finance, vol. 1, no. 1, Dec. 2016, pp. 33-46, doi:10.18559/ref.2016.1.4.