@techreport{oai:repository.dl.itc.u-tokyo.ac.jp:00042470,
 author = {Obinata, Takashi},
 month = {Sep},
 note = {application/pdf, 本文フィルはリンク先を参照のこと},
 title = {Concept and Relevance of Income},
 year = {2002}
}