%0 Journal Article %A L. Bernal-Gonzalez %T A Note on Universal and Non-Universal Invertible Selfmappings %J Mathematica balkanica %D 2001 %P 251 %V 15 %N 3-4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MABA_2001_15_3-4_a6/ %F MABA_2001_15_3-4_a6