Liang Lu, 
   Arnab Ghoshal and 
   Steve Renals. Regularized subspace Gaussian mixture models for speech recognition.  In  IEEE signal processing letters, Vol. 18(7):419-422,   2011. Note: DK.
 @Article{LuGhRe2011a,
        AUTHOR = {Lu, Liang and Ghoshal, Arnab and Renals, Steve},
        TITLE = {Regularized subspace Gaussian mixture models for speech recognition},
        YEAR = {2011},
        JOURNAL = {IEEE signal processing letters},
        VOLUME = {18},
        NUMBER = {7},
        PAGES = {419-422},
        NOTE = {DK} } 
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