%0 Journal Article %A Macbeath, A. M. %T Generic Dirichlet polygons and the modular group %J Glasgow mathematical journal %D 1985 %P 129-141 %V 26 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089500006133/ %R 10.1017/S0017089500006133 %F 10_1017_S0017089500006133