@article{oai:barrel.repo.nii.ac.jp:00000296,
 author = {Ogasawara, Haruhiko},
 issue = {2/3},
 journal = {商学討究 : The Economic Review (Otaru University of Commerce)},
 month = {Dec},
 pages = {329--336},
 title = {Supplement to the paper“ Asymptotic expansions for the ability estimator in item response theory”},
 volume = {63},
 year = {2012}
}