%0 Journal Article %A A. V. Bushanskii %T Best approximation in the mean of multiply monotone functions %J Informatics and Automation %D 1987 %P 74-75 %V 180 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1987_180_a36/ %G ru %F TRSPY_1987_180_a36