1. B. Banaschewski, R. Harting. Lattice aspects of radical ideals and choice principles. Proc. London Math. Soc. (3) 50 (1985) 385–404.
2. M. M. Clementino, J. Picado, A. Pultr. The other closure and complete sublocales. Appl. Categ. Structures 26 (2018) 891-906
3. errata ibid. 26 (2018) 907-908.
4. C. H. Dowker, D. Strauss. Paracompact frames and closed maps. In: Symposia Mathematica, XVI, pp. 93–116. Convegno sulla Topologia Insiemistica e Generale, INDAM, Rome, 1973. Academic Press, London, 1975.
5. M. J. Ferreira. J. Gutiérrez García, J. Picado. Completely normal frames and real-valued functions. Topology Appl. 156 (2009) 2932–2941.