TY  - JOUR
AU  - Dmitry Portnyagin
TI  - A generalization of the maximum principle
 to nonlinear parabolic systems
JO  - Annales Polonici Mathematici
PY  - 2003
SP  - 217
EP  - 236
VL  - 81
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/ap81-3-2/
DO  - 10.4064/ap81-3-2
LA  - en
ID  - 10_4064_ap81_3_2
ER  -