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@article{SF_1986__33_134809, author = {R. de Laubenfels}, title = {Scalar-type spectral operators and holomorphie semigroups.}, journal = {Semigroup forum}, pages = {257--264}, publisher = {mathdoc}, volume = {33}, year = {1986}, zbl = {0583.47040}, url = {http://geodesic.mathdoc.fr/item/SF_1986__33_134809/} }
R. de Laubenfels. Scalar-type spectral operators and holomorphie semigroups.. Semigroup forum, Tome 33 (1986), pp. 257-264. http://geodesic.mathdoc.fr/item/SF_1986__33_134809/