1. Adámek, J., Herrlich, H., Strecker, G.E.: Abstract and Concrete Categories: The Joy of Cats. Wiley, New York (1990)
2. Bentley, H.L., Herrlich, H., Lowen-Colebunders, E.: Convergence. J. Pure Appl. Algebra 68, 27–45 (1990)
3. Borceux, F.: Handbook of Categorical Algebra 1, 2, 3. Cambridge University Press, Cambridge (1994)
4. Brock, P., Kent, D.C.: Approach spaces, limit tower spaces, and probabilistic convergence spaces. Appl. Categ. Struct. 5, 99–110 (1997)
5. Činčura, J.: Tensor products in the category of topological spaces. Comment. Math. Univ. Carol. 20, 431–446 (1979)