• Berger, J. (2004) The last mile: how to sustain long-distance migration in mammals. Conservation Biology, 18, 320331.
  • Berger, J. & Cunningham, C. (1994) Bison: Mating and Conservation in Small Populations. Columbia University Press, New York.
  • Bolger, D.T., Newmark, W.D., Morrison, T.A. & Doak, D.F. (2008) The need for integrative approaches to understand and conserve migratory ungulates. Ecology Letters, 11, 6377.
  • Clarke, R., Jourdonnais, C., Mundinger, J., Steeffler, L. & Wallen, R. (2005) Interagency Bison Management Plan. US National Park Service, US Department of Agriculture, Montana Department of Livestock, Montana Fish Wildlife and Parks.
  • Harris, G., Thirgood, S., Hopcraft, G., Cromsigt, J. & Berger, J. (2009) Global decline in aggregated migrations of large terrestrial mammals. Endangered Species Research, in press.
  • Thirgood, S., Mosser, A., Tham, S., Hopcraft, G., Mwangomo, E., Mlengeya, T., Kilewo, M., Fryxell, J., Sinclair, A. & Borner, M. (2004) Can parks protect migratory ungulates? The case of Serengeti wildebeest. Animal Conservation, 7, 113120.