%0 Journal Article %A S. Kaczmarz %T Notes on orthogonal series II %J Studia Mathematica %D 1934 %P 103-106 %V 5 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-5-1-103-106/ %R 10.4064/sm-5-1-103-106 %G en %F 10_4064_sm_5_1_103_106