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@article{MZ_1993__214_1_174573, author = {E.B. Davies}, title = {Eigenvalue stability bounds via weighted {Sobolov} spaces.}, journal = {Mathematische Zeitschrift}, pages = {357--372}, publisher = {mathdoc}, volume = {214}, number = {1}, year = {1993}, zbl = {0799.58082}, url = {http://geodesic.mathdoc.fr/item/MZ_1993__214_1_174573/} }
E.B. Davies. Eigenvalue stability bounds via weighted Sobolov spaces.. Mathematische Zeitschrift, Tome 214 (1993) no. 1, pp. 357-372. http://geodesic.mathdoc.fr/item/MZ_1993__214_1_174573/