%0 Journal Article %A %T Preface to the following paper [to the paper by J. G.-M (J. MikusiƄski), Hypernumbers] %J Studia Mathematica %D 1983 %P 1-2 %V 77 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-77-1-1-2/ %R 10.4064/sm-77-1-1-2 %G en %F 10_4064_sm_77_1_1_2