DJVU PDF Bielmeier, R. 2000, "Syntactic, semantic, and pragmatic-epistemic functions of auxiliaries in Western Tibetan", in Linguistics of the Tibeto-Burman Area, vol. 23, no. 2, pp. 79-125. cite.

DJVU PDF Volkart, M. 2000, "The meaning of the auxiliary morpheme 'dug in the aspect systems of Central Tibetan dialects", in Linguistics of the Tibeto-Burman Area, vol. 23, no. 2, pp. 127-153. cite.