Hahn, Matthew W.:

Bentley, R. Alexander, Matthew W. Hahn, and Stephen J. Shennan
  2004  Random Drift and Culture Change. Proceedings of the Royal Society B: Biological Sciences 271 (1547): 1443-1450.

Hahn, Matthew W., and R. Alexander Bentley
  2003  Drift as a Mechanism for Cultural Change: An Example from Baby Names. Proceedings of the Royal Society B: Biological Sciences 270: 120-123.