Feature extraction by geometric algebra from geometric data
@Article{toukeisuuri2008,
  author =  {M.T. Pham and  K. Tachibana and E. Hitzer and S. Buchholz  and  T. Yoshikawa and T. Furuhashi},
  title = 		 {Feature extraction by geometric algebra from geometric data},
  journal = 	 {Toukei Suuri},
  year = {2008},
  volume = {56},
  number = {2},
  pages  = {185--198},
  annote = {in Japanese}
}