%0 Journal Article %A Macbeath, A. M. %T On a Theorem of Hurwitz %J Glasgow mathematical journal %D 1961 %P 90-96 %V 5 %N 2 %U http://geodesic.mathdoc.fr/articles/10.1017/S2040618500034365/ %R 10.1017/S2040618500034365 %F 10_1017_S2040618500034365