%0 Journal Article %A A. M. Sebel'din %T Complete direct sums of Abelian torsion-free groups of rank 1 with isomorphic groups or rings of endomorphisms. I %J Matematičeskie zametki %D 1973 %P 867-878 %V 14 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1973_14_6_a11/ %G ru %F MZM_1973_14_6_a11