Cyrus Jahanchahi, Clive Cheong Took, Danilo P. Mandic. On gradient calculation in quaternion adaptive filtering. In 2012 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2012, Kyoto, Japan, March 25-30, 2012. pages 3773-3776, IEEE, 2012. [doi]
Abstract is missing.