Compression Semigroups of Open Orbits on Real Flag Manifolds. J. Hilgert, Karl-Hermann Neeb (1995) Monatshefte für Mathematik
Connected CM-homomorphisms into ℭ [ I ] Kenneth D., Jr. Magill (1973) Czechoslovak Mathematical Journal
Connected CM-homomorphisms into semigroups of closed binary relations on hereditarily locally connected cont inua. D.I. Adu (1978) Semigroup forum
Correction to my paper "On a type of matrix semigroup algebras" . J.S. Ponizovskiï (1994) Semigroup forum
Covering in the set of principal ideals in the semigroup of binary relations. M. Breen (1994) Semigroup forum
Die Darstellung von partiellen K -stelligen Operationen Jan Kastl, Tomáš Tichý (1976) Commentationes Mathematicae Universitatis Carolinae
Die K -abgeschlossenen Teilmengen der Halbgruppen Jan Kastl (1976) Commentationes Mathematicae Universitatis Carolinae
Die...-Klassen der endlichen symmetrischen Halbgruppen und ihre Mächtigkeiten. K. Todorov (1979) Semigroup forum