%0 Journal Article %A W. Mlak %T Differential inequalities with unbounded operators in Banach spaces %J Annales Polonici Mathematici %D 1960 %P 101-111 %V 9 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-9-1-101-111/ %R 10.4064/ap-9-1-101-111 %G en %F 10_4064_ap_9_1_101_111