Lee, T., Lewicki, M. S., & Sejnowski, T. S.(2000).ICA Mixture Models for Unsupervised Classification of
Non-Gaussian Sources and Automatic Context Switching in
Blind Signal Separation.IEEE Transactions on Pattern Analysis and Machine
Intelligence,22(10),1078-1089.
Lee, T., Lewicki, M., Girolami, M., & Sejnowski, T.(1999).Blind source separation of more sources than mixtures
using overcomplete representations..IEEE Signal Processing Letters,6(4),87–90.