TY  - JOUR
AU  - T. Saito
TI  - Products of four idempotents in finite full transformation semigroups.
JO  - Semigroup forum
PY  - 1989
SP  - 179
EP  - 194
VL  - 39
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1989__39_2_134985/
ID  - SF_1989__39_2_134985
ER  -