References
- Björk L. Velopharyngeal function in connected speech. Acta Radiol. 1961; 203, Suppl.
- Fant C. G. M. Acoustic Theory of Speech Production. Mouton & Co., s-Gravenhage 1960
- Fant C. G. M. Analysis and synthesis of speech processes. Manual of Phonetics. North-Holland Publ. Comp., Amsterdam 1968
- Fujimura O. Nasalization of vowels in relation to nasals. J. Acoust. Soc. Atner. 1958; 4: 237
- Kyttä J. Finnish oesophageal speech after laryngectomy. Sound spectrographic and cineradio-graphic studies. Acta Otolaryng. (Stockh.) 1964; 196, Suppl.
- Liberman A. M. Some results of research on speech perception. J. Acoust. Soc. Amer. 1957; 29: 117
- Potter R. K., Kopp G. A., Green H. C. Visible Speech. van Nostrand, New York 1947
- Sovijärvi A. Sonagrammitutkimuksia Kuhmoi-sten murteen liudennuksesta. Verba docent. SKS, Helsinki. 1959; 423
- Sovijarvi A. Yleisen fonetiikan peruskurssi. Helsingin yliopiston monistuststo, Helsinki 1961; II
- Ylppö A., Sovijärvi A. Sonagraphic and palatographs studies of full denture, half denture and edentulous cases. Acta Odont. Scand. 1962; 20: 257