TY  - JOUR
AU  - Petrich, Mario
TI  - The kernel and trace operators for ideal extensions of regular semigroups
JO  - Glasgow mathematical journal
PY  - 1994
SP  - 219
EP  - 231
VL  - 36
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.1017/S0017089500030767/
DO  - 10.1017/S0017089500030767
ID  - 10_1017_S0017089500030767
ER  -