J. Yamagishi, T. Nose, H. Zen, T. Toda, и K. Tokuda. Proceedings of the 2008 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), стр. 3957-3960. Las Vegas, NV, USA, (марта 2008)
T. Masuko, T. Kobayashi, M. Tamura, J. Masubuchi, и K. Tokuda. Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 6, стр. 3745-3748. Seattle, WA, USA, (мая 1998)