@inproceedings{410,
  author = {Charles Clarke and Noriko Kando and Tetsuya Sakai},
  title = {Preface From NTCIR-13 General Chairs},
  year = {2017},
  journal = {Preface From NTCIR-13 General Chairs},
  url = {https://research.nii.ac.jp/ntcir/workshop/OnlineProceedings13/pdf/ntcir/01-NTCIR13-PREFACE.pdf},
}