%0 Journal Article %A Jan Śliwa %T On distribution of values of σ(n) in residue classes %J Colloquium Mathematicum %D 1973 %P 283-291 %V 27 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-27-2-283-291/ %R 10.4064/cm-27-2-283-291 %G en %F 10_4064_cm_27_2_283_291