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@article{MAN_1993__296_4_165093, author = {Paul Ressel}, title = {Bochner's theorem for finite-dimensional conelike semigroups.}, journal = {Mathematische Annalen}, pages = {431--440}, publisher = {mathdoc}, volume = {296}, number = {4}, year = {1993}, zbl = {0790.43008}, url = {http://geodesic.mathdoc.fr/item/MAN_1993__296_4_165093/} }
Paul Ressel. Bochner's theorem for finite-dimensional conelike semigroups.. Mathematische Annalen, Tome 296 (1993) no. 4, pp. 431-440. http://geodesic.mathdoc.fr/item/MAN_1993__296_4_165093/