@article{1195511447,
author = {Shirakawa, Hiroshi},
title = {A partial criterion for ergodicity of geodesic flows on surfaces with infinite area and negative curvature},
journal = {Proc. Japan Acad. Ser. A Math. Sci.},
volume = {69},
number = {10},
year = {1993},
pages = { 115-118},
language = {en},
url = {http://dml.mathdoc.fr/item/1195511447}
}
Shirakawa, Hiroshi. A partial criterion for ergodicity of geodesic flows on surfaces with infinite area and negative curvature. Proc. Japan Acad. Ser. A Math. Sci., Tome 69 (1993) no. 10, pp. 115-118. http://gdmltest.u-ga.fr/item/1195511447/