
@BOOK{Lamport1994,
title={{LaTeX: A Document Preparation System})},
author={Leslie Lamport},
publisher={Addison-Wesley Professional},
year={1994},
month={7},
edition={2},
isbn={0201529831}
}

@techreport{Heckman_2008,
 title = {{Econometric Causality}},
 author = {James J. Heckman},
 institution = {National Bureau of Economic Research},
 type = {Working Paper},
 series = {Working Paper Series},
 number = {13934},
 year = {2008},
 month = {March}
}

@article{MRW1992,
  title={{A Contribution to the Empirics of Economic Growth}},
  author={N. Gregory Mankiw and David Romer and David N. Weil},
  journal={The Quarterly Journal of Economics},
  year={1992},
  volume={107},
  number={2},
  month={May},
  pages={407-437},
  doi={10.2307/2118477},
  language={English}
}


