Petrich Mario. (2004). The kernel relation for regular semigroups.
Chicago Style (17th ed.) CitationPetrich Mario. The Kernel Relation for Regular Semigroups. 2004.
MLA idézésPetrich Mario. The Kernel Relation for Regular Semigroups. 2004.
Figyelem: ezek az hivatkozások nem 100%-ban pontosak..