WASET
    Panikos Heracleous,  Using Teager Energy Cepstrum and HMM distancesin Automatic Speech Recognition and Analysis of Unvoiced Speech.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2009, vol. 35(11). 1988 - 1994
    [viewed 28 March 2024]. Available from: https://publications.waset.org/pdf/1838.