%0 Journal Article %A N. M. Khalfina %T The minimax character of a complex analogue of the $R^2$-test %J Informatics and Automation %D 1970 %P 12-22 %V 111 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1970_111_a1/ %G ru %F TRSPY_1970_111_a1