@article{GDZPPN002437082,
title = {Negative Curvature and Embedded Eigenvalues.},
journal = {Mathematische Zeitschrift},
volume = {205},
year = {1990},
pages = {301-308},
zbl = {0699.53052},
url = {http://dml.mathdoc.fr/item/GDZPPN002437082}
}
Donnelly, Harold. Negative Curvature and Embedded Eigenvalues.. Mathematische Zeitschrift, Tome 205 (1990) pp. 301-308. http://gdmltest.u-ga.fr/item/GDZPPN002437082/