%0 Journal Article %A Paul Iverson %T The number of countable isomorphism types of complete extensions of the theory of Boolean algebras %J Colloquium Mathematicum %D 1991 %P 181-187 %V 62 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-62-2-181-187/ %R 10.4064/cm-62-2-181-187 %G en %F 10_4064_cm_62_2_181_187