@article{GDZPPN002440970,
title = {Subgroups of Hilbert spaces.},
journal = {Mathematische Zeitschrift},
volume = {209},
year = {1992},
pages = {657-670},
zbl = {0762.46015},
url = {http://dml.mathdoc.fr/item/GDZPPN002440970}
}
Dobrowski, Tadeusz; Grabowski, Janusz. Subgroups of Hilbert spaces.. Mathematische Zeitschrift, Tome 209 (1992) pp. 657-670. http://gdmltest.u-ga.fr/item/GDZPPN002440970/