D. M.  Johnson and Horvitz, C. C., ?Estimating postnatal dispersal: tracking the unseen dispersers?, Ecology, vol. 86, pp. 1185-1190, 2005.

D. M.  Johnson, ?Metapopulation models: An empirical test of model assumptions and evaluation methods?, Ecology, vol. 86, pp. 3088-3098, 2005.