%0 Journal Article %A A. Pełczyński %T A characterization of Hilbert-Schmidt operators %J Studia Mathematica %D 1966 %P 355-360 %V 28 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-28-3-355-360/ %R 10.4064/sm-28-3-355-360 %G en %F 10_4064_sm_28_3_355_360