WASET
    Abdelali Joumad and  Abdelaziz Nasroallah,  Unsupervised Segmentation by Hidden Markov Chain with Bi-dimensional Observed Process.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    December 2011, vol. 60(12). 1992 - 2001
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/1939.