Actual problems of modern science: Abstracts of XLІV International scientific-practical conference (Kharkiv – Vienna – Berlin – Astana, October 30, 2019)
Actual problems of modern science: Abstracts of XLІV International scientific-practical conference (Kharkiv – Vienna – Berlin – Astana, October 30, 2019)
Actual problems of modern science: Abstracts of XLІ International scientific-practical conference (Kharkov - Vienna - Berlin, May 30, 2019)
Actual problems of modern science: Abstracts of XXХV International scientific-practical conference (Moscow — Astana — Kharkiv — Vienna, October 30, 2018)