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@article{CMH_1980__55_139831, author = {Peter Li}, title = {Eigenvalue estimates on homogeneous manifolds.}, journal = {Commentarii mathematici Helvetici}, pages = {347--363}, publisher = {mathdoc}, volume = {55}, year = {1980}, zbl = {0451.53036}, url = {http://geodesic.mathdoc.fr/item/CMH_1980__55_139831/} }
Peter Li. Eigenvalue estimates on homogeneous manifolds.. Commentarii mathematici Helvetici, Tome 55 (1980), pp. 347-363. http://geodesic.mathdoc.fr/item/CMH_1980__55_139831/