@article{oai:kansaigaidai.repo.nii.ac.jp:00006716,
 author = {Vilet, Edward R. Van},
 journal = {研究論集, Journal of Inquiry and Research},
 month = {Feb},
 pages = {39--58},
 title = {You are r-less?! : The Various r Phones of English through Distinctive Features},
 volume = {63},
 year = {1996}
}