NASA - National Aeronautics and Space Administration

Geremia, C., P. J. White, R. L. Wallen, F. G. R. Watson, J. J. Treanor, J. Borkowski, C. Potter, and R. L. Crabtree (2011), Predicting Bison Migration out of Yellowstone National Park using Bayesian Models, PLoS ONE, 6, e16848, doi:10.1371/journal.pone.0016848.