@article{oai:rikkyo.repo.nii.ac.jp:00010193,
 author = {Shirakawa, Hiroshi},
 issue = {2},
 journal = {Commentarii mathematici Universitatis Sancti Pauli, Rikkyo Daigaku sugaku zasshi},
 month = {Dec},
 note = {P(論文)},
 pages = {163--182},
 title = {An Example of Infinite Measure Preserving Ergodic Geodesic Flow on a Surface with Constant Negative Curvature},
 volume = {31},
 year = {1982}
}