1. On an unusual mode of chanting by certain Tibetan lamas;Smith;J Acoust Soc Am,1967
2. Analysis of vowel sounds by ear;Smith;Arch Neerl Phonet Exp,1947
3. Warum hören wir Sinustöne?;Terhardt;Naturwiss en schaften,1989
4. Formants and fundamental frequency control in singing. An experimental study of coupling between vocal tract and voice source;Sundberg;STL-QPSR,1979
5. Formant tuning in a professional baritone;Miller;J Voice,1990