TY  - JOUR
AU  - A. Umar
TI  - Some combinatorial problems in the theory of partial transformation semigroups
JO  - Algebra and discrete mathematics
PY  - 2014
SP  - 110
EP  - 134
VL  - 17
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ADM_2014_17_1_a7/
LA  - en
ID  - ADM_2014_17_1_a7
ER  -