Reyes G. E. and H. Zolfaghari (1996). Bi-Heyting Algebras, Toposes and
Modalities. Journal of Philosophical Logic 25. No.1 pp.25-43.
Gonzalo E. Reyes – Marie La Palme Reyes
From mathematics to literature. – Des mathématiques à la littérature.
Gonzalo E. Reyes - Marie La Palme Reyes 