Science and Global Studies: Abstracts of reports of the VІІ International Scientific Conference (Prague, Czech Republic, April 15, 2021)

Scientific research: the paradigm of innovative development: Abstracts of reports of the VІІ International scientific conference (Prague, Czech Republic, March 31, 2021)

Actual problems of modern science: Abstracts of XLІ International scientific-practical conference (Kharkov - Vienna - Berlin, May 30, 2019)