@article{oai:repository.dl.itc.u-tokyo.ac.jp:00016603,
 author = {Tominaga, Yuko},
 journal = {言語情報科学},
 month = {Mar},
 pages = {143--158},
 title = {A Study on Learner Factors in Acquiring English Pronunciation},
 volume = {7},
 year = {2009}
}