TY  - JOUR
AU  - Shyampada Modak
AU  - Chhanda Bandyopadhyay
TI  - A Note on ψ-Operator
JO  - Bulletin of the Malaysian Mathematical Society
PY  - 2007
VL  - 30
IS  - 1
UR  - http://geodesic.mathdoc.fr/item/BMMS_2007_30_1_a4/
ID  - BMMS_2007_30_1_a4
ER  -