@article{Warren2015,
author = {Warren, J.R. and Luo, L. and Halpern-Manners, A. and Raymo, J.M. and Palloni, A.},
title= {Do different methods for modeling age-graded trajectories yield consistent and valid results?},
year = {2015},
doi = {10.1086/681962},
volume = {120},
number = {6},
pages = {1809--1856},
}