TY  - JOUR
AU  - Marsden, J. E.
TI  - A Correspondence Principle for Momentum Operators
JO  - Canadian mathematical bulletin
PY  - 1967
SP  - 247
EP  - 250
VL  - 10
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1967-023-x/
DO  - 10.4153/CMB-1967-023-x
ID  - 10_4153_CMB_1967_023_x
ER  -