DJVU PDF Benedict, P.K. 1985, "The Sino-Tibetan existential *s-ri", in Linguistics of the Tibeto-Burman Area, vol. 8, no. 1, pp. 11-13. cite.

Walters, S. and Ndaxit, A. 2006, "Existential clauses in Nosu Yi texts", in Linguistics of the Tibeto-Burman Area, vol. 29, no. 1, pp. 127-148. cite.