@inbook{Caswell2007b,
author = {Caswell, H.},
title= {Evolutionary demography: the invasion exponent and the effective population density in nonlinear matrix models},
year = {2007b},
editor = {Rooney, N.},
editor = {McCann, K.S.},
editor = {Noakes, D.L.G.},
booktitle = {From energetics to ecosystems: the dynamics and structure of ecological systems},
address = {Dortrecht, Netherlands},
publisher = {Springer},
pages = {237--256 },
}