%0 Journal Article %T GMJ volume 7 issue 4 Cover and Front matter %J Glasgow mathematical journal %D 1966 %P f1-f2 %V 7 %N 4 %U http://geodesic.mathdoc.fr/articles/10.1017/S204061850003536X/ %R 10.1017/S204061850003536X %F 10_1017_S204061850003536X