%0 Journal Article %T GMJ volume 39 issue 1 Cover and Back matter %J Glasgow mathematical journal %D 1997 %P b1-b2 %V 39 %N 1 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089500031827/ %R 10.1017/S0017089500031827 %F 10_1017_S0017089500031827