%0 Journal Article %A Zdzisław Denkowski %T On a criterion of uniqueness for periodic solutions of linear second order difference equations %J Annales Polonici Mathematici %D 1972 %P 41-49 %V 27 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-27-1-41-49/ %R 10.4064/ap-27-1-41-49 %G en %F 10_4064_ap_27_1_41_49