@article{Margolis2019,
author = {Margolis, R. and Verdery, A.M.},
title= {A cohort perspective on the demography of grand-parenthood: Past, present, and future changes in race and sex disparities in the United States},
year = {2019},
doi = {10.1007/s13524-019-00795-1},
volume = {56},
number = {4},
pages = {1495--1518},
}