1. D. Arnold and C. Vinsonhaler, ‘‘Finite rank
Butler groups: A survey of recent results,’’ Lect. Notes Pure
Appl. Math. 146, 17–41 (1993).
2. L. Fuchs and C. Metelli, ‘‘On a class of Butler
groups,’’ Manuscr. Math. 71, 1–28 (1991).
3. L. Fuchs, Infinite Abelian Groups (Academic,
New York, London, 1970, 1973), Vols. 1, 2.
4. A. Mader, Almost Completely Decomposable
Abelian Groups, Vol. 13 of Algebra, Logic and Applications
(Gordon and Breach, Amsterdam, 1999).
5. E. Blagoveshchenskaya, ‘‘Classification of a
class of almost completely decomposable groups,’’ in Rings,
Modules, Algebras and Abelian Groups, Lect. Notes Pure Appl.
Math. 236, 45–54 (2004).