%0 Journal Article %A Leo Marcus %T An expansion of an $ℵ_0$-categorical model %J Fundamenta Mathematicae %D 1979 %P 183-188 %V 103 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-103-3-183-188/ %R 10.4064/fm-103-3-183-188 %G en %F 10_4064_fm_103_3_183_188