@article{oai:repository.dl.itc.u-tokyo.ac.jp:00041016,
 author = {Morita, Shigeyuki},
 journal = {Scientific papers of the College of Arts and Sciences, the University of Tokyo},
 month = {},
 note = {application/pdf},
 pages = {109--121},
 title = {Finite Converings of Punctured Torus Bundles and the First Betti Number},
 volume = {35},
 year = {1985}
}