TY  - JOUR
AU  - G. A. Seregin
TI  - Differential properties of extremals of variational problems in the mechanics of viscoplastic media
JO  - Informatics and Automation
PY  - 1990
SP  - 117
EP  - 124
VL  - 188
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TRSPY_1990_188_a5/
LA  - ru
ID  - TRSPY_1990_188_a5
ER  -