%0 Journal Article %A Kazimierz Napiórkowski %T On generalized eigenfunctions of operators in a Hilbert space %J Studia Mathematica %D 1973 %P 79-82 %V 46 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-46-1-79-82/ %R 10.4064/sm-46-1-79-82 %G en %F 10_4064_sm_46_1_79_82