TY - JOUR AU - Wright, E. M. TI - An extension of a theorem of Gordon JO - Glasgow mathematical journal PY - 1965 SP - 39 EP - 41 VL - 7 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.1017/S2040618500035152/ DO - 10.1017/S2040618500035152 ID - 10_1017_S2040618500035152 ER -