%0 Journal Article
%A Yu. L. Shmul'yan
%T On operator balls and linear-fractional transformations with operator coefficients
%J Sbornik. Mathematics
%D 1968
%P 309-326
%V 6
%N 3
%U http://geodesic.mathdoc.fr/item/SM_1968_6_3_a1/
%G en
%F SM_1968_6_3_a1