TY  - JOUR
AU  - Ya. A. Roitberg
AU  - Z. G. Sheftel
TI  - Energy inequalities for elliptic operators with discontinuous coefficients and for general boundary conditions and conjugacy conditions
JO  - Doklady Akademii Nauk
PY  - 1963
SP  - 531
EP  - 533
VL  - 148
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1963_148_3_a12/
LA  - ru
ID  - DAN_1963_148_3_a12
ER  -