%0 Journal Article %A B. P. Osilenker %T An example of a unicellular Volterra operator with 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_a26/ %G ru %F RM_1965_20_6_a26