TY  - JOUR
AU  - M. Yu. Zvyagin
TI  - Classification of B\"acklund transformations of second-order partial differential equations
JO  - Matematičeskie zametki
PY  - 1981
SP  - 829
EP  - 842
VL  - 29
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1981_29_6_a3/
LA  - ru
ID  - MZM_1981_29_6_a3
ER  -