Castello Dubra, J. A. “Finalism and Formalism in the Marsilian Concept of Law: The Law and the Human Legislators in the Defensor Pacis”. Patristica Et Mediævalia, Vol. 18, Nov. 1997, pp. 81-96, http://revistascientificas.filo.uba.ar/index.php/petm/article/view/7911.