Scientific debate: the issue of Economy and Finance: Abstracts of ХIІ International scientific-practical Conference (Kyiv-Budapest-Vienna, December 29, 2017)
Actual problems of modern science: Abstracts of ХХV International scientific-practical conference (Moscow - Astana - Kharkiv - Vienna, December 28, 2017)
Actual problems of modern science: Abstracts of ХХІV International scientific-practical conference (St. Petersburg - Astana - Kiev - Vienna, November 29, 2017)
Actual problems of modern science: Abstracts of ХХІV International scientific-practical conference (St. Petersburg - Astana - Kiev - Vienna, November 29, 2017)
