TY  - JOUR
TI  - Joint sessions of the Petrovskii Seminar on differential equations and mathematical problems of physics and of the Moscow Mathematical Society (third session, January~8--10,~1980)
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1980
VL  - 35
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1980_35_4_a23/
LA  - ru
ID  - RM_1980_35_4_a23
ER  -