Andreu, Agustín. “On Sensory Perception in ‘The Idea of Principle in Leibniz and the Evolution of Deductive Theory’”. Revista de Estudios Orteguianos (Journal of Orteguian Studies), no. 25 (November 1, 2012): 73–107. Accessed November 2, 2026. https://publicaciones.ortegaygasset.edu/reo/article/view/431.