TY  - JOUR
AU  - Petrich, Mario
TI  - On sandwich sets and congruences on regular semigroups
JO  - Czechoslovak Mathematical Journal
PY  - 2006
SP  - 27
EP  - 46
VL  - 56
IS  - 1
PB  - mathdoc
UR  - https://geodesic-test.mathdoc.fr/item/CMJ_2006__56_1_a3/
LA  - en
ID  - CMJ_2006__56_1_a3
ER  -