@article{Lee2017,
author = {Lee, B. and Martin, M. and Matthews, S. and Farrell, C.},
title= {A universal trend? State-level changes in US racial and ethnic diversity, 1980 to 2015},
year = {2017},
doi = {10.4054/DemRes.2017.37.33},
volume = {37},
number = {33},
pages = {1031--1048},
}