"Commutative Semigroups with Few Invariant Congruences" . . "Semigroup Forum" . . "453;471" . "P(GA201/98/P247), Z(MSM 113200007)" . "2"^^ . "Commutative Semigroups with Few Invariant Congruences"@en . . "RIV/00216208:11320/02:00004112!RIV/2003/GA0/113203/N" . "El Bashir, Robert" . "Commutative Semigroups with Few Invariant Congruences"@en . "Commutative Semigroups with Few Invariant Congruences" . "[E7D6E7557490]" . . . "Kepka, Tom\u00E1\u0161" . "Commutative Semigroups with Few Invariant Congruences" . "641222" . . . "RIV/00216208:11320/02:00004112" . . . . "DE - Spolkov\u00E1 republika N\u011Bmecko" . "11320" . . . . . "64" . . "0037-1912" . "Commutative;Semigroups;Invariant;Congruences"@en . . . "Commutative Semigroups with Few Invariant Congruences"@en . . "0"^^ . "19"^^ . "0"^^ . "2002" . "2"^^ . .