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@article{MZ_1992__211_3_174466, author = {Tadeusz Dobrowski and Janusz Grabowski}, title = {Subgroups of {Hilbert} spaces.}, journal = {Mathematische Zeitschrift}, pages = {657--670}, publisher = {mathdoc}, volume = {211}, number = {3}, year = {1992}, zbl = {0762.46015}, url = {http://geodesic.mathdoc.fr/item/MZ_1992__211_3_174466/} }
Tadeusz Dobrowski; Janusz Grabowski. Subgroups of Hilbert spaces.. Mathematische Zeitschrift, Tome 211 (1992) no. 3, pp. 657-670. http://geodesic.mathdoc.fr/item/MZ_1992__211_3_174466/