Within-class feature normalization for robust speech recognition. - Yuan-Fu Liao; Chi-Hui Hsu; Chi-Min Yang; Jeng-Shien Lin; Sen-Chia Chang (INTERSPEECH, 2008)

Reference Eigen-Environment and Speaker Weighting for Robust Speech Recognition. - Yuan-Fu Liao; Hung-Hsiang Fang; Chi-Min Yang (ISCSLP, 2008)