%0 Journal Article
%A Antonio Terceño
%A M. Glòria Barberà-Mariné
%A Hernán Vigier
%A Yanina Laumann
%T Stability of Beta Coefficients of Sector and Subsector Portfolios in an Uncertain Environment
%J Computer Science and Information Systems
%D 2014
%V 11
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CSIS_2014_11_2_a23/
%F CSIS_2014_11_2_a23