@article{Chetty2017,
author = {Chetty, R. and Grusky, D. and Hell, M. and Hendren, N. and Manduca, R. and Narang, J.},
title= {The fading American dream: Trends in absolute income mobility since 1940},
year = {2017},
doi = {10.1126/science.aal4617},
volume = {356},
number = {6336},
pages = {398--406},
}