@techreport{oai:repository.dl.itc.u-tokyo.ac.jp:00041959,
 author = {Nishimura, Kiyohiko G and Ozaki, Hiroyuki},
 month = {Apr},
 note = {application/pdf, 本文フィルはリンク先を参照のこと},
 title = {Search under the Knightian Uncertainty},
 year = {2001}
}