%0 Journal Article %A A. Fitzke %T On a system of difference inequalities of parabolic type %J Annales Polonici Mathematici %D 1969 %P 299-302 %V 22 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-22-3-299-302/ %R 10.4064/ap-22-3-299-302 %G en %F 10_4064_ap_22_3_299_302