Research of Advertising Market on the Example of Orel Region. Science Outpost, [S. l.], v. 14, n. 1, p. 68–71, 2020. DOI: 10.36683/2076-5347-2020-1-51-68-71. Disponível em: https://forpost-nauki.owebs.ru/article/view/5351. Acesso em: 28 sep. 2026.