References

SEMILATTICES OF TWO CLASSES OF SEMIGROUPS


[1] J. B. Fountain, Abundant semigroups, Proc. London Math. Soc. 44 (1982), 103-129.

[2] J. A. Green, On the structure of semigroups, Annals of Math. 54 (1951), 163-172.

[3] J. M. Howie, Fundamentals of Semigroup Theory, Clarendon Press, Oxford, 1995.

[4] M. Petrich, Introduction to Semigroups, Merill, Columbus, Ohio, 1973.

[5] X. J. Tang, Semilattices of semigroups, Semigroup Forum 57 (1998), 37-41.

[6] H. W. Zheng, Semilattices of semigroups, Int. J. Algebra 8 (2014), 643-647.