TY  - JOUR
AU  - Cannarsa, Piermarco
TI  - On a maximum principle for elliptic systems with constant coefficients
JO  - Rendiconti del Seminario Matematico della Università di Padova
PY  - 1981
SP  - 77
EP  - 84
VL  - 64
PB  - Seminario Matematico of the University of Padua
UR  - http://www.numdam.org/item/RSMUP_1981__64__77_0/
LA  - en
ID  - RSMUP_1981__64__77_0
ER  -