TY  - JOUR
AU  - M. I. Vishik
AU  - V. V. Grushin
TI  - Degenerating elliptic differential and psevdo-differential operators
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1970
SP  - 21
EP  - 50
VL  - 25
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1970_25_4_a3/
LA  - en
ID  - RM_1970_25_4_a3
ER  -