PILLAI SUDHIER, K. G. Obsolescence of Physics Literature Cited in the Doctoral Dissertations of University of Kerala. Journal of Information and Knowledge, [S. l.], v. 44, n. 4, p. 399–410, 2007. DOI: 10.17821/srels/2007/v44i4/44264. Disponível em: https://srels.org/index.php/sjim/article/view/44264. Acesso em: 6 apr. 2025.