1. Abramsky, S., Coecke, B.: Categorical Quantum Mechanics. In: Engesser, K., Gabbay, D. M., Lehmann, D. (eds.) Handbook of Quantum Logic and Quantum Structures, p. 261–32, Elsevier, Amsterdam (2009)
2. Awodey, S.: Category Theory. Number 49 in Oxford Logic Guides. Oxford University Press (2006)
3. Barr, M.: Relational algebras, pp 39–55. Springer Berlin Heidelberg, Berlin (1970)
4. Bénabou, J.: Introduction to bicategories Reports of the Midwest Category Seminar, pp. 1–77. Springer (1967)
5. Bush, P., Grabowski, M., Lahti, P.: Operational Quantum Physics. Springer-Verlag, Berlin (1995)