%0 Journal Article %A JOHN LAMPERTI %A GEORGE O'BRIEN %T On a Functional Equation Related to Iteration (Short Communication) %J Aequationes mathematicae %D 1971 %P 322-322 %V 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/AM2_1971__7_136262/ %F AM2_1971__7_136262