@techreport{oai:repository.dl.itc.u-tokyo.ac.jp:00042584,
 author = {Sugawara, Shinya},
 month = {Apr},
 note = {application/pdf, 本文フィルはリンク先を参照のこと},
 title = {An Interval Regression Analysis for Tenures of Japanese Elder Care Workers Using Matched Employer-Employee Data},
 year = {2013}
}