@article{Heckman2010,
author = {Heckman, J. and S., Moon and Pinto, R. and P.A., Savelyev and Yavitz, A.},
title= {The rate of return to the HighScope Perry Preschool Program},
year = {2010},
doi = {10.1016/j.jpubeco.2009.11.001},
volume = {94},
number = {1–2},
pages = {114--128},
}