@article{Steiner2014,
author = {Steiner, U.K. and Tuljapurkar, S. and Coulson, T.},
title= {Generation time, net reproductive rate, and growth in stage-age-structured populations},
year = {2014},
doi = {10.1086/675894},
volume = {183},
number = {6},
pages = {771--783},
}