Semigroup Forum · 1989 · 22 citations · 8 references
Natural SciencesMathematicsSet TheoryCategory TheoryGroup TheoryFree GroupsObjectsSemigroup Theory
8
On varieties of completely regular semigroups I
Libor Polák · Semigroup Forum · 1985 · 96 citations
The free completely regular semigroup on a set
A. H. Clifford · Journal of Algebra · 1979 · 63 citations