PERINI-SANTOS, Ernesto. This is not an indexical concept! A note on Robert Hanna’s theory of natural kind concepts. Kant e-prints, Campinas, SP, v. 11, n. 1, p. 46–57, 2017. Disponível em: https://periodicos.sbu.unicamp.br/ojs/index.php/kant/article/view/8672529. Acesso em: 17 ago. 2024.