%0 Journal Article %A V. A. Belonogov %T On irreducible characters of the group~$S_n$ that are semiproportional on~$A_n$ or $S_n\setminus A_n$.~I %J Trudy Instituta matematiki i mehaniki %D 2008 %P 143-163 %V 14 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TIMM_2008_14_2_a13/ %G ru %F TIMM_2008_14_2_a13