@techreport{oai:repository.dl.itc.u-tokyo.ac.jp:00042795,
 author = {Nakayama, Keita and Takahashi, Akihiko},
 month = {May},
 note = {application/pdf, Revised Version of 2006-F-438., 本文フィルはリンク先を参照のこと},
 title = {A Factor Allocation Approach to Optimal Bond Portfolio},
 year = {2007}
}