PANAYOTOV, T. „Radikal“ Newspaper Publishing Company. Yearbook of Department Mass Communications, [S. l.], v. 1, p. 103–136, 2020. DOI: 10.33919/ydmc.19.1.7. Disponível em: https://ojs.nbu.bg/index.php/YMCD/article/view/410. Acesso em: 28 sep. 2022.