@ARTICLE{Saegusa2005,
  author = {Saegusa, Ryo and Sakano, Hitoshi and Hashimoto, Shuji},
  title = {A Nonlinear Principal Component Analysis of Image Data},
  journal = {IEICE Trans. Inf. \& Syst.},
  year = {2005},
  volume = {E88-D},
  pages = {2242-2248},
  number = {10}
}