%0 Journal Article
%A COSTA, ANTONIO F.
%A HALL, WENDY
%A SINGERMAN, DAVID
%T DOUBLES OF KLEIN SURFACES
%J Glasgow mathematical journal
%D 2012
%P 507-515
%V 54
%N 3
%U http://geodesic.mathdoc.fr/articles/10.1017/S0017089512000109/
%R 10.1017/S0017089512000109
%F 10_1017_S0017089512000109