%0 Journal Article %T Population concentration in cities and urban agglomerations as a negative trend of spatial development of the Russian Federation in the context of ensuring economic security of the state %A Oganyan, V.A. %K spatial development of the Russian Federation, economic security of the state, negative trends, small and medium-sized cities, rural areas %J Russian Journal of Management %D 2026 %N 14 %P 13 %I Publishing Center RIOR