1. Abramsky, S.: A Cook’s Tour of the Finitary Non-Well-Founded Sets. In: Artemov, S., Barringer, H., Garcez, A.A. (eds.) We Will Show Them! Essays in Honour of Dov Gabbay, vol. 1, pp. 1–18. College Publications, London (2005)
2. Abramsky, S., Jung, A.: Domain Theory. In: Abramsky, S., Gabbay, D.M., Maibaum, T.S.E. (eds.) Handbook of Logic in Computer Science: Semantic Structures, vol. 3, pp. 1–168. Oxford University Press, Oxford (1995)
3. Adámek, J.: Introduction to coalgebra. Theory Appl. Categ. 14(8), 157–199 (2005)
4. Adámek, J., Herrlich, H., Strecker, G.E.: Abstract and concrete categories: the joy of cats. Pure Applied Mathematics (New York). Wiley, New York (1990). http://tac.mta.ca/tac/reprints/articles/17/tr17abs.html. Republished in: Reprints in Theory and Applications of Categories, No. 17 (2006) pp. 1–507
5. Akhvlediani, A., Clementino, M.M., Tholen, W.: On the categorical meaning of Hausdorff and Gromov distances, I. Topol. Appl. 157(8), 1275–1295 (2010). https://doi.org/10.1016/j.topol.2009.06.018