vowel lengthening

Sources

• TRASK 1996 201

  TRASK, R. L. (1996) A Dictionary of Phonetics and Phonology. London: Routledge. 

• HOCK 1986 139-140

  HOCK, Hans Henrich. (1986) Principles of Historical Linguistics. Berlin: Mouton de Gruyter.

• MacKay 1989 240 (lengthened vowel)

  MACKAY, Ian. (1989) Phonetics and Speech Science. A Bilingual Dictionary. Dictionnaire Bilingue de la Phonétique et des Sciences de la Parole. New York/Bern: Peter Lang.

• BOUQUIAUX & THOMAS 1992 [trans.] 19 (lengthening of the vowel)

  BOUQUIAUX, Luc & THOMAS, Jacqueline M.C. (eds.) (1992 [trans.]) Studying and Describing Unwritten Languages. Trans. By James Roberts.  Dallas : SIL.