[1] J. Chvalina: Set transformations with centralizers formed by closed deformations of quasidiscrete spaces. Proc. of the Fourth Topological Symposium 1976, Part B, Soc. Czech. Math. Phys., Prague 1977, 83-89. MR 0500872

[2] J. Chvalina: Autonomous automata and closures with the same endomorphism monoids. Archivum Math. Brno 12 (1976), 213-224. MR 0435267 | Zbl 0437.68030

[3] J. Chvalina: On connected unars with regular endomorphism monoids. Archivum Math. Brno 16 (1980), 7-14. MR 0594663 | Zbl 0463.08003

[4] J. Chvalina: Characterization of certain general and reproductive solutions of arbitrary equations. Matematički vesnik 39 (1987), 5-12. MR 0917216

[5] L. L. Ezekia: O topologičeskich modeljach Kripke. (On topological Kripke models). Dokl. A. N. SSSR 214/2 (1974), 298-301. MR 0339994

[6] L. L. Ezekia: Algebry Gejtinga I. Teorija dvojstvennosti. (Heyting algebras I. Theory of duality). Tbilisi 1985, p. 105. MR 0847050

[7] S. Mac Lane: Categories for the working mathematician. Springer, New York-Heidelberg- Berlin 1971. MR 0354798 | Zbl 0232.18001

[8] M. Novotný: O jednom problému z teorie zobrazení. (Sur un problème de la théorie des applications). Publ. Fac. Sci. Univ. Masaryk Brno, No 344 (1953), 53-64. MR 0061149

[9] M. Novotný: Über Abbildungen von Mengen. Рас. J. Math. 13 (1963), 1359-1369. MR 0157143

[10] M. Novotný: Mono-unary algebras in the work of Czechoslovak mathematicians. Archivum Math. Brno 26 (1990), 155-164. MR 1188275

[11] M. O. Rabin D. Scott: Finite automata and their decision problems. IBM J. Res. 3 (1959), 115-125. MR 0103795