TY  - JOUR
AU  - Peter Hess
TI  - On the Principal Eigenvalue of a Second Order Linear Elliptic Problem with an Indefinite Weight Function.
JO  - Mathematische Zeitschrift
PY  - 1982
SP  - 237
EP  - 240
VL  - 179
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1982__179_173141/
ID  - MZ_1982__179_173141
ER  -