00497naa#a2200157#i#450# EN\\bibl\117711 20260328235755.6 1998-6785 20260323b2026####ek#y0engy0150####ca RU The State Border and Border Territories in the Spatial Development of the Russian Far East Journal article Vladivostok Vladivostok State University 2026 11 с. Journal article local Kireev Anton A ojkum.editorum.ru