1. Banaschewski, B.: Another look at the localic Tychonoff Theorem. Comment. Math. Univ. Carolin. 29, 647–656 (1988)
2. Banaschewski, B.: Singly generated frame extensions. J. Pure Appl. Algebra 83, 1–21 (1992)
3. Banaschewski, B., Pultr, A.: On weak lattice and frame homomorphisms. Algebra Univ. 51, 137–151 (2004)
4. Clementino, M.M.: Separation and Compactness in Categories, Doctoral dissertation, University of Coimbra (1991)
5. Clementino, M.M., Giuli, E., Tholen, W.: Topology in a category: compactness. Portugal. Math. 53, 397–433 (1996)