1. Bai, B.-R., Tseng, C.-Y., Lee, L.S., 1997. A multi-phase approach for fast spotting of large vocabulary chinese keywords from Mandarin speech using prosodic information. In: Proc. ICASSP, 1997. Vol. 2, pp. 903–906
2. Gao, Y., Hon, H.-W., Lin, Z., Loudon, G., Yogananthan, S., Yuan B., 1995. Tangerine: A large vocabulary Mandarin dictation system. In: Proc. ICASSP, 1995. Vol. 1, pp. 77–80
3. Hanpanich, S., 1993. The statistical distribution of consonants, vowels and tones within Thai syllable existing as words and word constituents. Master Thesis, Department of Linguistics, Chulalongkorn University, Bangkok, Thailand
4. Measurement of pitch by subharmonic summation;Hermes;J. Acoustical Soc. Am.,1988
5. ITU-T, 1988. Specification for an intermediate reference system. Telecommunication Standardization Sector of International Telecommunication Union, Blue Book. Vol. 5, Rec. P.48, pp. 81–86