%0 Journal Article
%A Gard Olav Helle
%A John Rognes
%T Boardman's Whole-Plane Obstruction Group for Cartan-Eilenberg Systems
%J Documenta mathematica
%D 2019
%P 1855-1878
%V 24
%U http://geodesic.mathdoc.fr/articles/10.4171/dm/717/
%R 10.4171/dm/717
%F 10_4171_dm_717