1. Ao, Benjamin X. P. (1992) ?Metrical Constituents as Domains of Tone Sandhi in Nantong Chinese,? paper presented at CLS 28, Chicago.
2. Bao, Zhiming (1990)On the Nature of Tone, PhD dissertation, MIT.
3. Bao, Zhiming (1992) ?Toward a Typology of Tone Sandhi,? paper presented at BLS 28, Special Session on the Typology of Tonal Systems, Berkeley.
4. Chan, Marjorie K. M. (1991) ?Contour-tone Spreading and Tone Sandhi in Danyang Chinese?,Phonology 8.2., 237?259.
5. Chao, Yuen-Ren (1928)Xiandai Wuyu Yanju [Studies in the Modern Wu dialects], Tsing Hua Univerisity, Peting.