%0 Journal Article %A K. Zima %T On a differential inequality with a lagging argument %J Annales Polonici Mathematici %D 1966 %P 227-233 %V 18 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-18-3-227-233/ %R 10.4064/ap-18-3-227-233 %G en %F 10_4064_ap_18_3_227_233