@article{Costa2000,
author = {Costa, D.L. and Kahn, M.E.},
title= {Power couples: Changes in the location choice of the college educated, 1940-1990},
year = {2000},
doi = {10.1162/003355300555079},
journal = {Quarterly Journal of Economics},
volume = {115},
number = {4},
pages = {1287--1315},
}