%0 Journal Article %T A Note on Regular Coverings of Closed Orientable Surfaces %J Glasgow mathematical journal %D 1961 %P 49-66 %V 5 %N 2 %U http://geodesic.mathdoc.fr/articles/10.1017/S2040618500034316/ %R 10.1017/S2040618500034316 %F 10_1017_S2040618500034316