TY  - JOUR
AU  - K. Todorov
TI  - On the orders of the subsemigroups of the symmetrical semigroup Jn.
JO  - Semigroup forum
PY  - 1980
SP  - 329
EP  - 336
VL  - 21
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SF_1980__21_134455/
ID  - SF_1980__21_134455
ER  -