@incollection{LaPolla2010,
  author    = {Randy J. LaPolla},
  title     = {The role of migration and language contact in the development of the Sino-Tibetan language family},
  booktitle = {Areal Diffusion and Genetic Inheritance: Case Studies in Language Change, ed. by R. M. W. Dixon \& A. Y. Aikhenvald},
  url       = {http://victoria.linguistlist.org/~lapolla//rjlapolla/papers/migration.pdf},
  year      = {2010},
}