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@article{MS2_1953__1_165503, author = {Einar HILLE}, title = {Some extremal properties of {Laplace} transforms .}, journal = {Mathematica Scandinavica}, pages = {227--236}, publisher = {mathdoc}, volume = {1}, year = {1953}, zbl = {0051.33503}, url = {http://geodesic.mathdoc.fr/item/MS2_1953__1_165503/} }
Einar HILLE. Some extremal properties of Laplace transforms .. Mathematica Scandinavica, Tome 1 (1953), pp. 227-236. http://geodesic.mathdoc.fr/item/MS2_1953__1_165503/