Pierris, Graciela de. 2016. “A Fundamental Ambiguity in the Cartesian Theory of Ideas: Descartes and Leibniz on Intellectual Apprehension”. Manuscrito: Revista Internacional De Filosofia 25 (2). Campinas, SP:105-46. https://periodicos.sbu.unicamp.br/ojs/index.php/manuscrito/article/view/8644480.