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@article{MZ_1980__172_172941, author = {Harold Donnelly and Peter Li}, title = {Lower {Bounds} for the {Eigenvalues} of {Negatively} {Curved} {Manifolds.}}, journal = {Mathematische Zeitschrift}, pages = {29--40}, publisher = {mathdoc}, volume = {172}, year = {1980}, zbl = {0413.58020}, url = {http://geodesic.mathdoc.fr/item/MZ_1980__172_172941/} }
Harold Donnelly; Peter Li. Lower Bounds for the Eigenvalues of Negatively Curved Manifolds.. Mathematische Zeitschrift, Tome 172 (1980), pp. 29-40. http://geodesic.mathdoc.fr/item/MZ_1980__172_172941/