DJVU PDF Ferlus, M. 1977, "Etude d’une strate de changements phonétiques dans l’ancien Cambodge", in The Mon-Khmer Studies Journal, vol. 6, pp. 59-67. cite.
DJVU PDF Sakamoto, Y. 1977, "The Sources Of Khmer /ɯə/", in The Mon-Khmer Studies Journal, vol. 6, pp. 273-278. cite.