Miranda Rojas R. Rigidity, essentialism and actualism in referential terms for natural kinds. discusionesfilosoficas [Internet]. 2011 Jul. 1 [cited 2024 Jul. 22];12(19):181-98. Available from: https://revistasojs.ucaldas.edu.co/index.php/discusionesfilosoficas/article/view/622