DJVU PDF Wayland, R. and Jongman, A. 2001, "Chanthaburi Khmer vowels: Phonetic and phonemic analyses", in The Mon-Khmer Studies Journal, vol. 31, pp. 65-82. cite.

DJVU PDF Edmondson, J.A. 2001, "The aryepiglottic folds and voice quality in the Yi and Bai languages: Laryngoscopic case studies", in The Mon-Khmer Studies Journal, vol. 31, pp. 83-100. cite.