%0 Journal Article %A E. Cohen %T Almost even functions of finite abelian groups %J Acta Arithmetica %D 1961 %P 311-323 %V 7 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-7-3-311-323/ %R 10.4064/aa-7-3-311-323 %G en %F 10_4064_aa_7_3_311_323