@article{JMLR:v6:kawanabe05a,
  author  = {Motoaki Kawanabe and Klaus-Robert Müller},
  title   = {Estimating Functions for Blind Separation When Sources Have Variance Dependencies},
  journal = {Journal of Machine Learning Research},
  year    = {2005},
  volume  = {6},
  number  = {16},
  pages   = {453--482},
  url     = {http://jmlr.org/papers/v6/kawanabe05a.html}
}