https://councils.forbes.com/profile/Polina-Beletskaya-Marketing-Director-Sellvia/4738ab74-42a1-4da6-8280-9cf40a5e5fe6
Polina Beletskaya | Marketing Director - Sellvia | Forbes Communications Council
marketing directorpolinasellviaforbescommunications
https://archive.econ.msu.ru/journal/issues/2019/2019.volume_11.issue_3/Adult_Training_in_the_Digital_Age_eng/?SLANG=Ru
Eckhardt Bode, Robert Gold Adult Training in the Digital Age (trans. Maria Yu. Beletskaya)