• L.M. de Rijk, “Semantics and Metaphysics in Gilbert of Poitiers: a Chapter of Twelfth-Century Platonism,” Vivarium 26 (1988), 73-122 and 27 (1989), 1-35.

• C. Erismann, “Explaining Exact Resemblance: Gilbert of Poitiers’s Conformitas Theory Reconsidered,” Oxford Studies in Medieval Philosophy 2 (2014), 1-24.

• J.J.E. Garcia, Introduction to the Problem of Individuation in the Early Middle Ages (Munich: 1988).

• J. Marenbon, “Gilbert of Poitiers,” in P. Dronke (ed.) A History of Twelfth-Century Western Philosophy (Cambridge: 1988), 328-52.

• L.O. Nielsen, Theology and Philosophy in the Twelfth Century (Leiden: 1982).

• H.C. Van Elswijk, Gilbert Porreta: sa vie, son oeuvre, sa pensée (Leuven: 1966).