TY  - JOUR
AU  - N. S. Koshlyakov
TI  - On a second-order partial differential equations
JO  - Informatics and Automation
PY  - 1935
SP  - 189
EP  - 200
VL  - 9
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TRSPY_1935_9_a5/
LA  - ru
ID  - TRSPY_1935_9_a5
ER  -