Heterogeneous acoustic measurements for phonetic classification 1. - Andrew K. Halberstadt; James R. Glass (EUROSPEECH, 1997)

Using aggregation to improve the performance of mixture Gaussian acoustic models. - Timothy J. Hazen; Andrew K. Halberstadt (ICASSP, 1998)

Heterogeneous measurements and multiple classifiers for speech recognition. - Andrew K. Halberstadt; James R. Glass (ICSLP, 1998)

Heterogeneous acoustic measurements and multiple classifiers for speech recognition. - Andrew K. Halberstadt (1999)