@techreport{oai:repository.dl.itc.u-tokyo.ac.jp:00042574,
 author = {Ihori, Toshihiro and Martin, McGuireb},
 month = {Nov},
 note = {application/pdf, 本文フィルはリンク先を参照のこと},
 title = {Group Provision Against Adversity: Security By Insurance vs. Protection},
 year = {2006}
}