%0 Journal Article %T GMJ volume 55 issue 2 Cover and Front matter %J Glasgow mathematical journal %D 2013 %P f1-f2 %V 55 %N 2 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089513000013/ %R 10.1017/S0017089513000013 %F 10_1017_S0017089513000013