@article{oai:repository.dl.itc.u-tokyo.ac.jp:00041091,
 author = {Yamamoto, Nobuko},
 journal = {Scientific papers of the College of General Education, University of Tokyo},
 month = {},
 note = {application/pdf},
 pages = {13--17},
 title = {On E. Hille's Theorem},
 volume = {7},
 year = {1957}
}