@article{CTT100657750,
  author = {Tuan Duong Nguyen and Isao Yamada},
  title = {Necessary and Sufficient Conditions for Convergence of The DDT Systems of The Normalized PAST Algorithms},
  journal = {Signal Processing},
  year = 2013,
}

@inproceedings{CTT100660115,
  author = {Nguyen, T.D. and Du Plessis, M.C. and Kanamori, T. and & Sugiyama, M.},
  title = {Constrained least-squares density-difference estimation},
  booktitle = {IEICE Technical Report},
  year = 2013,
}

@inproceedings{CTT100600026,
  author = {Tuan Duong Nguyen and Noriyuki Takahashi and Isao Yamada},
  title = {Numerically stable algorithms for adaptive generalized minor subspace extraction},
  booktitle = {IEICE Technical Report},
  year = 2010,
}