%0 Journal Article %T GMJ volume 33 issue 1 Cover and Front matter %J Glasgow mathematical journal %D 1991 %P f1-f8 %V 33 %N 1 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089500007941/ %R 10.1017/S0017089500007941 %F 10_1017_S0017089500007941