@techreport{oai:tsukuba.repo.nii.ac.jp:00022684,
 author = {Ohta, Makoto and 太田, 誠 and Kano, Shigeki},
 month = {},
 note = {Includes bibliographical references},
 title = {Estimating a matching function and regional matching efficiencies : Japanese panel date for 1973-1999},
 year = {2002}
}