TY  - JOUR
AU  - Laradji, A.
AU  - Umar, A.
TI  - Combinatorial results for semigroups of order-decreasing partial transformations
JO  - Journal of integer sequences
PY  - 2004
VL  - 7
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/JIS_2004__7_3_a5/
LA  - en
ID  - JIS_2004__7_3_a5
ER  -