@inproceedings{CTT100593582,
  author = {Yukihiro Murakami and Masao Yamagishi and Masahiro Yukawa and Isao Yamada},
  title = {A Sparse Adaptive Filtering Using Time-Varying Soft-Thresholding Techniques},
  booktitle = {Proceedings of IEEE ICASSP 2010},
  year = 2010,
}

@inproceedings{CTT100591898,
  author = {Yukihiro Murakami and Masao Yamagishi and Masahiro Yukawa and Isao Yamada},
  title = {Using Time-Varying Soft-Thresholding Techniques for Adaptive Identification of Sparse Systems},
  booktitle = {Proceedings of IEICE SIP Symposium 2009},
  year = 2009,
}