@article{CTT100630010,
  author = {Noriko Kobayashi and Hilofumi Yamamoto},
  title = {Measuring Japanese Language Ability: relationship between learner's traits and SPOT scores},
  journal = {Journal for Japanese Language Education, University of Tsukuba},
  year = 1997,
}

@inproceedings{CTT100628858,
  author = {Hilofumi Yamamoto},
  title = {Development system of Japanese Conversation Practice Database, indexed by Situation and Function},
  booktitle = {年会論文集},
  year = 1997,
}