Maslennikov, V. V., A. S. Linnikov, and O. V. Maslennikov. “The Estimation of Losses of the Russian Economy from Population Migration to Developed Countries in 2000-2017”. Journal of Reviews on Global Economics, vol. 7, Nov. 2018, pp. 442-9, http://lifescienceglobalca.com/index.php/jrge/article/view/5708.