%0 Journal Article %A P. E. Parvanov %T An Estimation of the Best Monotone Spline Approximation with the Averaged Moduli of Smoothness %J Mathematica balkanica %D 1999 %P 419 %V 13 %N 3-4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MABA_1999_13_3-4_a11/ %F MABA_1999_13_3-4_a11