@article{CTT100549071,
  author = {Masao YAMAGISHI and Isao YAMADA},
  title = {A Deep Monotone Approximation Operator Based on the  Best Quadratic Lower Bound of Convex Functions},
  journal = {IEICE Transactions on Fundamentals},
  year = 2008,
}

@inproceedings{CTT100565686,
  author = {Masao Yamagishi and ISAO YAMADA},
  title = {An Improvement of Subgradient Projection Operator and Its Machine Learning Application},
  booktitle = {Proceedings of IEICE SIP Symposium 2008},
  year = 2008,
}

@inproceedings{CTT100564902,
  author = {ISAO YAMADA and Tomasz Piotrowski and Masao Yamagishi},
  title = {Reduced-rank extension of BLUE and deep lipschitzian gradient projector for inverse problems},
  booktitle = {IUCr2008 (CD-ROM of Abstract)},
  year = 2008,
}