Davis, A. J. Department of Biochemistry, MPI for Chemical Ecology, Max Planck Society;
Jordan, F., Liu, W. C., & Davis, A. J. (2006). Topological keystone species: measures of positional importance in food webs. Oikos, 112(3), 535-546. doi:10.1111/j.0030-1299.2006.13724.x.