@INPROCEEDINGS{KawMue04, author = {Kawanabe, M. and M\"{u}ller, K.-R.}, title = "Estimating functions for blind separation when sources have variance-dependencies", booktitle = "Proc. of ICA2004", year = "2004", address = "Granada, Spain", note = "accepted", pdf = "http://doc.ml.tu-berlin.de/publications/publications/KawMue04.pdf" }