[6] K. Iséki:
On ideals in semirings. Proc. Japan Acad. 34 (1958), 501 - 509.
MR 0095870
[8] A. B. Paalman-de Miranda:
Topological Semigroups. second edition. Mathematisch Centrum, Amsterdam, 1970.
Zbl 0242.22003
[9] Št. Schwarz:
Prime ideals and maximal ideals in semigroups. Czech. Math. J. 19 (1969), 72-79.
MR 0237680 |
Zbl 0176.29503
[11] K. P. Shum:
On compressed ideals in topological semigroups. Czech. Math. J. 25 (100), (1975), 261-273.
MR 0369602 |
Zbl 0316.22004
[12] K. P. Shum:
On the boundary of algebraic radical of ideals in topological semigroups. Acta Math. Sci. Hung. 25 (1974), 15-19.
DOI 10.1007/BF01901741 |
MR 0376947