@article{Yellin1977,
author = {Yellin, J. and Samuelson, P.A.},
title= {Comparison of linear and nonlinear models for human population dynamics},
year = {1977},
doi = {10.1016/0040-5809(77)90010-7},
volume = {11},
number = {1},
pages = {105--126},
}