For citations:

Zhukovskaya N.Y. “MIDDLE POWERS” AS AN ELEMENT OF THE MODERN WORLD SYSTEM: ON THE THEORETICAL UNDERSTANDING OF THE CONCEPT. Tambov University Review. Series: Humanities. 2018;23(171):172-178. (In Russ.) https://doi.org/ 10.20310/1810-0201-2018-23-1(171)-172-178