@techreport{oai:repository.dl.itc.u-tokyo.ac.jp:00042738,
 author = {Khan, Haider A.},
 month = {Jun},
 note = {application/pdf, Problemas del Desarrollo, 131, 2002. 掲載予定., 本文フィルはリンク先を参照のこと},
 title = {On Paradigms, Theories and Models},
 year = {2002}
}