@article{Billari2013,
author = {Billari, F.C.  and Dalla-Zuanna, G. },
title= {Cohort replacement and homeostasis in world population, 1950‒2100},
year = {2013},
doi = {10.1111/j.1728-4457.2013.00628.x },
journal = {Population and Development Review },
volume = {39},
number = {4},
pages = {563--585},
}