TY  - JOUR
AU  - L. Nirenberg
TI  - Some problems in the theory of linear and non-linear partial differential equations
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1963
VL  - 18
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1963_18_4_a3/
LA  - ru
ID  - RM_1963_18_4_a3
ER  -