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@article{CMH_1981__56_139858, author = {I. Chavel and E.A. Feldman}, title = {Spectra of manifolds with small handles.}, journal = {Commentarii mathematici Helvetici}, pages = {83--102}, publisher = {mathdoc}, volume = {56}, year = {1981}, zbl = {0473.53037}, url = {http://geodesic.mathdoc.fr/item/CMH_1981__56_139858/} }
I. Chavel; E.A. Feldman. Spectra of manifolds with small handles.. Commentarii mathematici Helvetici, Tome 56 (1981), pp. 83-102. http://geodesic.mathdoc.fr/item/CMH_1981__56_139858/