@article{oai:teapot.lib.ocha.ac.jp:00034969,
 author = {Sawashima, Ikuko and 沢島, 侑子},
 issue = {2},
 journal = {お茶の水女子大學自然科學報告},
 month = {Dec},
 note = {application/pdf, 紀要論文},
 pages = {53--64},
 title = {On Spectral Properties of Some Positive Operators},
 volume = {15},
 year = {1964}
}