TY - JOUR TI - GMJ volume 53 issue 1 Cover and Front matter JO - Glasgow mathematical journal PY - 2011 SP - f1 EP - f2 VL - 53 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0017089510000807/ DO - 10.1017/S0017089510000807 ID - 10_1017_S0017089510000807 ER -