@misc{8894,
  author = {Ma, Hoàng Văn},
  title  = {The sound system of the Tày language of Cao Bằng province, Vietnam. In Edmondson, Jerold A. and David B. Solnit (eds.), Comparative Kadai – The Tai branch, 221-231. The Summer Institute of Linguistics & The University of Texas at Arlington.},
  year   = {1997}
}