@article{CTT100382114,
  author = {Jun-ichi Takada},
  title = {An Application of 4th Order Cumulants to both Delay Time and DOA Estimation of Multiple Delayed Waves by MMP},
  journal = {Transactions of IEICE B-II},
  year = 1998,
}

@article{CTT100427892,
  author = {Y. Sanada and J. Takada and K. Araki},
  title = {A Novel Cumulant Based MUSIC Like DOA Estimation Algorithm with Multicarrier Moduration (jointly authored)},
  journal = {IEICE Transactions on Communications},
  year = 1998,
}