%0 Journal Article %A V. T. Shevaldin %T Extremal interpolation in the mean with overlapping averaging intervals and $L$-splines %J Izvestiya. Mathematics %D 1998 %P 833-856 %V 62 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_1998_62_4_a7/ %G en %F IM2_1998_62_4_a7