VLIEGER, Esther; LEYDESDORFF, Loet. Content Analysis and the Measurement of Meaning: The Visualization of Frames in Collections of Messages. Public Journal of Semiotics, [S. l.], v. 3, n. 1, p. 28–50, 2011. DOI: 10.37693/pjos.2011.3.8830. Disponível em: https://journals.lub.lu.se/pjos/article/view/8830. Acesso em: 18 apr. 2024.