%0 Journal Article %T GMJ volume 61 issue 1 Cover and Back matter %J Glasgow mathematical journal %D 2019 %P b1-b3 %V 61 %N 1 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089518000472/ %R 10.1017/S0017089518000472 %F 10_1017_S0017089518000472