@techreport{Kearney2012,
author = {Kearney, M.S. and Levine, P.B.},
title= {Why is the teen birth rate in the United States so high and why does it matter?},
year = {2012},
publisher = {National Bureau of Economic Research},
address = {Cambridge, MA},
institution = {(NBER working paper 17965)},
}