%0 Journal Article %A Barbara Mażbic-Kulma %T Differential equations in a linear ring %J Studia Mathematica %D 1971 %P 155-159 %V 39 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-39-2-155-159/ %R 10.4064/sm-39-2-155-159 %G en %F 10_4064_sm_39_2_155_159