Some remarks on the four-spiral semigroup.
"Inverse Semigroups" by Mario Petrich.
Structure theorems for regular semigroups.
Semigroups and combinatorial applications - Perrot, J.F.
On ideal extensions of completely simple semigroups.
Conference report.
On certain codes admitting inverse semigroups as syntactic monoids.
Residual finiteness of a class of semigroups presented by a single relation.
Page 1