@inproceedings{CTT100530064,
  author = {Long Lu and Akinori Nishihara},
  title = {Watermarking for Halftoned Color Images},
  booktitle = {21st Signal Processing Symposium},
  year = 2006,
}

@inproceedings{CTT100636459,
  author = {Lu Long and Akinori Nishihara},
  title = {Data Hiding for Digital Halftoned Color Images},
  booktitle = {IEEE TENCON 2006},
  year = 2006,
}

@inproceedings{CTT100541957,
  author = {Long Lu and Akinori Nishihara},
  title = {Data Hiding for Digital Halftoned Color Images},
  booktitle = {20th Signal Processing Symposium},
  year = 2005,
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@inproceedings{CTT100539817,
  author = {Long Lu and Akinori Nishihara},
  title = {Data Hiding for Halftoned Color Images},
  booktitle = {19th Signal Processing Symposium},
  year = 2004,
}