For citations:
Litvin I.Yu. . Business Strategies. 2020;8(10):261-264. (In Russ.) https://doi.org/10.17747/2311-7184-2020-10-261-264
Litvin I.Yu. . Business Strategies. 2020;8(10):261-264. (In Russ.) https://doi.org/10.17747/2311-7184-2020-10-261-264