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@article{MM2_1977__23_154508, author = {Herbert Gross and Hans A. Keller}, title = {On the {Definition} of {Hilbert} {Space.}}, journal = {Manuscripta mathematica}, pages = {67--90}, publisher = {mathdoc}, volume = {23}, year = {1977}, zbl = {0365.46023}, url = {http://geodesic.mathdoc.fr/item/MM2_1977__23_154508/} }
Herbert Gross; Hans A. Keller. On the Definition of Hilbert Space.. Manuscripta mathematica, Tome 23 (1977), pp. 67-90. http://geodesic.mathdoc.fr/item/MM2_1977__23_154508/