DJVU PDF Fromkin, V. and Gandour, J.T. 1979, "On the phonological representation of contour tones", in Linguistics of the Tibeto-Burman Area, vol. 4, no. 1, pp. 73-74. cite.

DJVU PDF Hartmann, J. 1979, "Comparative Aspects of Lue Syntax", in South-east Asian Linguistic Studies Vol. 4, ed. N.D. Liem, vol. 4, pp. 1-15. Pacific Linguistics, the Australian National University. cite.

DJVU PDF Maddieson, I. 1979, "More on the representation of contour tones", in Linguistics of the Tibeto-Burman Area, vol. 4, no. 2, pp. 7-10. cite.

DJVU PDF Seree Weroha. 1992, "Semantic considerations in interpreting inscriptions: illustrations from Lue, Lao, and Kammuang", in Papers on Tai languages, Linguistics, and Literatures, ed. C.J. Compton and J.F. Hartmann, pp. 179-185. Center for Southeast Asian Studies, Northern Illinois University. cite.