@techreport{oai:repository.dl.itc.u-tokyo.ac.jp:00042889,
 author = {Miyawaki, Koji and Omori, Yasuhiro and Hibiki, Akira},
 month = {Oct},
 note = {application/pdf, 本文フィルはリンク先を参照のこと},
 title = {Discrete / Continuous Choice Model of the Residential Gas Demand on the Nonconvex Budget Set},
 year = {2010}
}