%0 Journal Article
%A F. Albiac
%A J. L. Ansorena
%T On a problem posed by M. M. Popov
%J Studia Mathematica
%D 2012
%P 247-258
%V 211
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/sm211-3-6/
%R 10.4064/sm211-3-6
%G en
%F 10_4064_sm211_3_6