@article{2006bunoptimalitytheoryvowelharmonyainu,
  title = {Applying Optimality Theory to Vowel Harmony in Ainu(英文)},
  author = {文雄 関},
  year = {2006},
  journal = {Medical Entomology and Zoology},
  language = {ain},
  url = {http://ci.nii.ac.jp/naid/110005944007}
}