%0 Journal Article %A Yu. N. Subbotin %T Extremal problems of the theory of approximation of functions with incomplete information %J Informatics and Automation %D 1980 %P 152-168 %V 145 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1980_145_a7/ %G ru %F TRSPY_1980_145_a7