For citations:

Zotova M.V., Kolosov V.A., Gritsenko A.A., Sebentsov A.B., Karpenko M.S. Territorial gradients in the socioeconomic development of the Russian border regions. Izvestiya Rossiiskoi Akademii Nauk. Seriya Geograficheskaya. 2018;(5):7-21. (In Russ.) https://doi.org/10.1134/S2587556618050163