@article{Billari2020,
author = {Billari, F.C. and Rotondi, V. and Trinitapoli, J.},
title= {Mobile phones, digital inequality, and fertility},
year = {2020},
doi = {10.4054/DemRes.2020.42.37},
volume = {42},
number = {37},
pages = {1057--1096},
}