%0 Journal Article %A V. I. Godich %A I. E. Lutsenko %T On the representation of a~unitary operator in the form of a~product of two involutions %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1965 %V 20 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1965_20_6_a7/ %G ru %F RM_1965_20_6_a7