%0 Journal Article
%A Hartfiel, Darald J.
%A Maxson, Carlton J.
%T A matrix characterization of the maximal groups in $\beta_X$
%J Czechoslovak Mathematical Journal
%D 1975
%P 274-278
%V 25
%N 2
%U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1975.101317/
%R 10.21136/CMJ.1975.101317
%G en
%F 10_21136_CMJ_1975_101317