TY  - JOUR
AU  - L. I. Kamynin
AU  - B. N. Khimchenko
TI  - On the strong extremum principle for a~D-$(\Pi,\Omega)$-elliptically connected operator of second order
JO  - Sbornik. Mathematics
PY  - 1981
SP  - 21
EP  - 50
VL  - 40
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1981_40_1_a1/
LA  - en
ID  - SM_1981_40_1_a1
ER  -