@article{10_4064_cm_42_1_19_31,
     author = {Kornel Benko and Monika Kothe and Klaus-Dieter Semmler and Udo Simon},
     title = {Eigenvalues of the {Laplacian} and curvature},
     journal = {Colloquium Mathematicum},
     pages = {19--31},
     publisher = {mathdoc},
     volume = {42},
     number = {1},
     year = {1979},
     doi = {10.4064/cm-42-1-19-31},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-42-1-19-31/}
}