TY - JOUR TI - GMJ volume 61 issue 1 Cover and Front matter JO - Glasgow mathematical journal PY - 2019 SP - f1 EP - f2 VL - 61 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0017089518000460/ DO - 10.1017/S0017089518000460 ID - 10_1017_S0017089518000460 ER -