TY  - JOUR
AU  - M. A. Shubin
TI  - Almost periodic functions and partial differential operators
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1978
SP  - 1
EP  - 52
VL  - 33
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1978_33_2_a0/
LA  - en
ID  - RM_1978_33_2_a0
ER  -