%0 Journal Article %A Pollicott, Mark %T Distribution of closed geodesics on the modular surface and quadratic irrationals %J Bulletin de la Société Mathématique de France %D 1986 %P 431-446 %V 114 %I Société mathématique de France %U http://www.numdam.org/articles/10.24033/bsmf.2064/ %R 10.24033/bsmf.2064 %G en %F BSMF_1986__114__431_0