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@article{MAN_1986__274_164090, author = {J. Sol\`a-Morales}, title = {Global {Instability} and {Essential} {Spectrum} in {Semilinear} {Evolution} {Equations.}}, journal = {Mathematische Annalen}, pages = {125--132}, publisher = {mathdoc}, volume = {274}, year = {1986}, zbl = {0567.35042}, url = {http://geodesic.mathdoc.fr/item/MAN_1986__274_164090/} }
J. Solà-Morales. Global Instability and Essential Spectrum in Semilinear Evolution Equations.. Mathematische Annalen, Tome 274 (1986), pp. 125-132. http://geodesic.mathdoc.fr/item/MAN_1986__274_164090/