1. J. C. Abbott, ed., Trends in Lattice Theory, Van Nostrand Reinhold Mathematical Studies, vol. 31 (1970).
2. P. Alexandroff and H. Hopf, Topologie I, Springer-Verlag, (1935).
3. E. Binz and H. H. Keller, Funktionenräume in der Kategorie der Limesräume, Annales Academiae Scientiarum Fennicae, Series A, I. Mathematica, no. 383 (1966), 21 pp.
4. G. Birkhoff, Lattice Theory, American Mathematical Society Colloquium Publications, vol. 25, Third (new) edition (1967).
5. E. Čech, Topological Spaces (revised by Z. Frolić and M. Katětov), Prague (1966).