@article{shi2009fixed,
  title={A fixed-point algorithm for blind source separation with nonlinear autocorrelation},
  author={Shi, Zhenwei and Jiang, Zhiguo and Zhou, Fugen},
  journal={Journal of computational and applied mathematics},
  volume={223},
  number={2},
  pages={908--915},
  year={2009},
  publisher={Elsevier}
}