%0 Journal Article %A Philip Olin %T $ℵ_0$-categoricity of products of 1-unary algebras %J Colloquium Mathematicum %D 1975 %P 25-31 %V 33 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-33-1-25-31/ %R 10.4064/cm-33-1-25-31 %G en %F 10_4064_cm_33_1_25_31