%0 Journal Article %A S. M. Ermakov %T The optimal unbiased plans of regression experiments %J Informatics and Automation %D 1970 %P 252-257 %V 111 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1970_111_a11/ %G ru %F TRSPY_1970_111_a11