Gris J. Undoubtedly Things do not Start; Or They Do Not Start When They Are Invented. Or the World Was Invented Old. ECDP [Internet]. 26 de julio de 2015 [citado 3 de mayo de 2024];(1):201-3. Disponible en: https://www.enclavesdelpensamiento.mx/index.php/enclaves/article/view/128