%0 Journal Article %A Biró, Balázs %T Isomorphism does not imply lower base-isomorphism for nonregular or non-locally finite-dimensional cylindric algebras %J Commentationes Mathematicae Universitatis Carolinae %D 1987 %P 221-226 %V 28 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1987__28_2_a3/ %G en %F CMUC_1987__28_2_a3