TY  - JOUR
AU  - Harold Donnelly
AU  - Peter Li
TI  - Lower Bounds for the Eigenvalues of Negatively Curved Manifolds.
JO  - Mathematische Zeitschrift
PY  - 1980
SP  - 29
EP  - 40
VL  - 172
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1980__172_172941/
ID  - MZ_1980__172_172941
ER  -