%0 Journal Article
%A Lehner, J.
%T Diophantine approximation on Hecke groups
%J Glasgow mathematical journal
%D 1985
%P 117-127
%V 26
%U http://geodesic.mathdoc.fr/articles/10.1017/S0017089500006121/
%R 10.1017/S0017089500006121
%F 10_1017_S0017089500006121