TY JOUR TI Migration As a Factor in Leveling Socio-Economic Differentiation of Russia’s Regions KW migration KW standard of living KW quality of life KW human resources KW employment and unemployment KW wages, territorial disproportions. JO Level of Life of the Population of Regions of Russia AU Shichkin, I.. PY 2015 IS 3 PB All-Russian center of living standards