Restraining factors of investment development of telecommunication companies and methods of their levelling. Economic Environment, [S. l.], v. 11, n. 1, p. 22–30, 2022. DOI: 10.36683/2306-1758/2022-1-39/22-30. Disponível em: https://econenv.owebs.ru/article/view/3718. Acesso em: 28 sep. 2026.