Pinto , C. “Rules for Radicals - 50 Years After: https://doi.Org/10.53809/2021-01-TS-n.1-67-88”. "Temas Sociais" Journal , no. 1, July 2021, pp. 67-88, https://revistas.ulusofona.pt/index.php/temassociais/article/view/7768.