%0 Journal Article %A S. Brzychczy %T Some theorems on second order partial differential inequalities of parabolic type %J Annales Polonici Mathematici %D 1964 %P 143-151 %V 15 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-15-2-143-151/ %R 10.4064/ap-15-2-143-151 %G en %F 10_4064_ap_15_2_143_151