TY  - JOUR
AU  - Hall, T. E.
TI  - On the natural ordering of -classes and of idempotents in a regular semigroup
JO  - Glasgow mathematical journal
PY  - 1970
SP  - 167
EP  - 168
VL  - 11
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.1017/S0017089500001026/
DO  - 10.1017/S0017089500001026
ID  - 10_1017_S0017089500001026
ER  -