@inproceedings{CTT100624484,
  author = {Manabu Hirakawa and Junichi Iijima},
  title = {A study on integrated mobile service using digital watermark for various information carriers},
  booktitle = {Proceedings of the 10th International Conference on Mobile Business},
  year = 2011,
}

@inproceedings{CTT100616341,
  author = {Manabu Hirakawa and Junichi Iijima},
  title = {Application of Digital Watermark Technology for Movie Data in Streaming Distribution Service},
  booktitle = {Proceedings of the IEEE International Conference on Industrial Engineering and Engineering Management (IEEM 2010)},
  year = 2010,
}

@inproceedings{CTT100613053,
  author = {Manabu Hirakawa and Junichi Iijima},
  title = {Mobile Services and Implementation of Digital Watermarks in Audio Files},
  booktitle = {Proceedings of the 6th International Conference on Intelligent Information Hiding and Multimedia Signal Processing},
  year = 2010,
}

@inproceedings{CTT100608022,
  author = {平川学 and 飯島淳一},
  title = {さまざまな情報担体に対する電子透かし技術を利用した流通管理に関する一考察},
  booktitle = {経営情報学会2010年春季全国研究発表大会予稿集},
  year = 2010,
}

@inproceedings{CTT100608020,
  author = {Manabu Hirakawa and Junichi Iijima},
  title = {A study on object-oriented implementation of digital watermark based on uncertainty management},
  booktitle = {Proceedings of ICSSSM'10},
  year = 2010,
}

@inproceedings{CTT100603774,
  author = {平川学 and 飯島淳一},
  title = {映像データに対する電子透かし技法に関する一考察},
  booktitle = {2010年電子情報通信学会講演論文集},
  year = 2010,
}

@inproceedings{CTT100592677,
  author = {平川学 and 飯島淳一},
  title = {映像データに対する電子透かし技術の実装とサービスに関する一考察},
  booktitle = {経営情報学会2009年春季全国研究発表大会予稿集},
  year = 2009,
}

@inproceedings{CTT100591318,
  author = {Manabu Hirakawa and Junichi Iijima},
  title = {A Study on Digital Watermarking Usage in the Mobile Marketing Field: Cases in Japan},
  booktitle = {Proceedings of  the 2nd International Symposium on Logistics and Industrial Informatics},
  year = 2009,
}

@inproceedings{CTT100588713,
  author = {Manabu Hirakawa and Junichi Iijima},
  title = {Validating the Effectiveness of Using Digital Watermarking Technology for E-commerce Website Protection},
  booktitle = {Proceedings of the 9th Asian eBusiness Workshop},
  year = 2009,
}

@inproceedings{CTT100586576,
  author = {平川学 and 飯島淳一},
  title = {音声データに対する電子透かし技術の実装とモバイルサービスに関する一考察},
  booktitle = {経営情報学会2009年春季全国研究発表大会予稿集},
  year = 2009,
}

@inproceedings{CTT100581784,
  author = {Manabu Hirakawa and Junichi Iijima},
  title = {A Study on Data Management Using Mobile Computing With Digital Watermark Technology},
  booktitle = {Proceedings of the 6th International Conference on Service Systems and Service Management (ICSSSM'09)},
  year = 2009,
}

@inproceedings{CTT100566915,
  author = {平川学 and 飯島淳一},
  title = {流通管理における電子透かし利用の一考察},
  booktitle = {経営情報学会2008年度秋季全国研究発表大会予稿集},
  year = 2008,
}

@inproceedings{CTT100566904,
  author = {平川 学},
  title = {著作権保護における電子透かしサービスモデルの有効性検証},
  booktitle = {経営情報学会2008年度春季全国研究発表大会予稿集},
  year = 2008,
}