%0 Journal Article %T GMJ volume 58 issue 2 Cover and Front matter %J Glasgow mathematical journal %D 2016 %P f1-f2 %V 58 %N 2 %U http://geodesic.mathdoc.fr/articles/10.1017/S001708951600001X/ %R 10.1017/S001708951600001X %F 10_1017_S001708951600001X