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@article{MAT_1969_13_6_a5, author = {H. P. McKean and I. Singer}, title = {Curvature and the eigenvalues of the {Laplacian}}, journal = {Matematika}, pages = {138--161}, publisher = {mathdoc}, volume = {13}, number = {6}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MAT_1969_13_6_a5/} }
H. P. McKean; I. Singer. Curvature and the eigenvalues of the Laplacian. Matematika, Tome 13 (1969) no. 6, pp. 138-161. http://geodesic.mathdoc.fr/item/MAT_1969_13_6_a5/