TY  - JOUR
AU  - Shultz, Harris S.
TI  - Multiplication of Operators by C ∞ Functions
JO  - Canadian mathematical bulletin
PY  - 1971
SP  - 579
EP  - 581
VL  - 14
IS  - 4
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1971-106-2/
DO  - 10.4153/CMB-1971-106-2
ID  - 10_4153_CMB_1971_106_2
ER  -