S. Itahashi, et al.: Standard for Japanese Speech Synthesizer Performance Evaluation, Proceedings of INTERNATIONAL SYMPOSIUM ON SPEECH TECHNOLOGY AND PROCESSING SYSTEMS and Oriental COCOSDA-2004, Vol-II (2004.11)
F. Charpentier, et al: Pitch-synchronous Waveform Processing Techniques for Text-T-Speech Synthesis Using Diphones, Eurospeech 89 vol.2(1989.9)