TY  - JOUR
AU  - M. M. Smirnov
TI  - Functionally invariant solutions and the nonuniqueness of the solution of the Darboux problem for degenerate hyperbolic equations
JO  - Differencialʹnye uravneniâ
PY  - 1976
SP  - 937
EP  - 939
VL  - 12
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1976_12_5_a19/
LA  - ru
ID  - DE_1976_12_5_a19
ER  -