1. A case for nominalism;J Azzouni,2004
2. Numbers, hallucinations and fictions;J Azzouni,2010
3. Azzouni, J. (2017). Ontology without borders. Oxford University Press.
4. Bardout, J.-C. (2013). Penser l’existence. I. L’existence exposée – Époque médiévale. Paris: Vrin.
5. Baumgarten, A. G. (1757). Metaphysica, Editio IV, Hale Magdeburgicae, Impensis Carol. Herman, Hemmerde.