TY  - JOUR
AU  - M.B. Szendrei
TI  - On a pull-back diagram for orthodox semigroups.
JO  - Semigroup forum
PY  - 1980
SP  - 1
EP  - 10
VL  - 20
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1980__20_134400/
ID  - SF_1980__20_134400
ER  -