1. See N. J. Green-Pedersen, “The Doctrine of ‘maxima propositio’ and ‘locus differentia’ in Commentaries from the 12th century on Boethius’ Topics’”, Studia Mediewistyczne 18 (1977) 125–63.
2. Peter Abelard, Super Topica glossae, ed. Mario dal Pra, in Pietro Abelardo: Seritti di logica, (Florence: La nuova Italia Editrice, 1969).
3. Ed. L. M. de Rijk, Logica Modernorum, (Assen: Van Gorcum, 1962–7), vol. II, pt. 1, pp. 130–46.
4. Ed. L. M. de Rijk, Logica Modernorum, (Assen: Van Gorcum, 1962–7), vol. II, pt. 1, pp. 164–5.
5. Ed. L. M. de Rijk, Logica Modernorum, (Assen: Van Gorcum, 1962–7), vol. II, pt. 1, pp. 151–5.