DJVU PDF Barnes, J. 1998, "Tsuu khaa tii hla?: deixis, demonstratives and discourse particles in Lai Chin", in Linguistics of the Tibeto-Burman Area, vol. 21, no. 1, pp. 53-86. cite.

DJVU PDF Hansson, I.-. 1996, "The interplay between the verb particle /schwa/ and the sentence particles in Akha", in Linguistics of the Tibeto-Burman Area, vol. 19, no. 1, pp. 65-76. cite.

DJVU PDF Delancey, S. 1985, "Etymological notes on Tibeto-Burman case particles", in Linguistics of the Tibeto-Burman Area, vol. 8, no. 1, pp. 59-77. cite.