ZHMAI, Aleksandr. Corporate social responsibility: the contribution of Ukrainian mobile operators to overcoming the consequences of the spread of COVID-19. Herald of Economics, [S. l.], n. 4, p. 116–128, 2022. DOI: 10.35774/visnyk2021.04.116. Disponível em: https://visnykj.wunu.edu.ua/index.php/htneu/article/view/1283.. Acesso em: 14 dec. 2025.