TY  - JOUR
AU  - S. O. Dehkordi
AU  - B. Davvaz
TI  - $\Gamma$-Semihyperrings: Approximations and Rough Ideals
JO  - Bulletin of the Malaysian Mathematical Society
PY  - 2012
VL  - 35
IS  - 4
UR  - http://geodesic.mathdoc.fr/item/BMMS_2012_35_4_a17/
ID  - BMMS_2012_35_4_a17
ER  -