%0 Journal Article %A P. V. Galkin %T The uniqueness of the element of best mean approximation to a continuous function using splines with fixed nodes %J Matematičeskie zametki %D 1974 %P 3-14 %V 15 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1974_15_1_a0/ %G ru %F MZM_1974_15_1_a0