@article{GDZPPN00209424X, title = {The Horocycle Flow is Mixing of all Degrees.}, journal = {Inventiones mathematicae}, volume = {46}, year = {1978}, pages = {201-210}, zbl = {0395.28012}, url = {http://dml.mathdoc.fr/item/GDZPPN00209424X} }
Marcus, Brian. The Horocycle Flow is Mixing of all Degrees.. Inventiones mathematicae, Tome 46 (1978) pp. 201-210. http://gdmltest.u-ga.fr/item/GDZPPN00209424X/