%0 Journal Article %A J. MikusiƄski %T Convolution approximation and shift approximation %J Studia Mathematica %D 1966 %P 1-8 %V 28 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-28-1-1-8/ %R 10.4064/sm-28-1-1-8 %G en %F 10_4064_sm_28_1_1_8