%0 Journal Article %A D. Przeworska-Rolewicz %T On equations with reflection %J Studia Mathematica %D 1969 %P 197-206 %V 33 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-33-2-197-206/ %R 10.4064/sm-33-2-197-206 %G en %F 10_4064_sm_33_2_197_206