Дорошенко, Ю. А., М. С. Старикова, and И. В. Сомина. “Comparative Assessment of the Border and Internal Regions of the Russian Federation by the Level of Development of Human Capital”. Modern Economics: Problems and Solutions, Vol. 12, Jan. 2020, pp. 251-9, doi:10.17308/meps.2019.12/2277.