TY  - JOUR
AU  - S. J. Bilchev
TI  - Systems of two first order partial differential equations (the conservation laws)
JO  - Izvestiâ vysših učebnyh zavedenij. Matematika
PY  - 1970
SP  - 28
EP  - 34
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IVM_1970_6_a3/
LA  - ru
ID  - IVM_1970_6_a3
ER  -