# 10 References

Athey, Susan, and Guido W. Imbens. 2017. “The State of Applied Econometrics: Causality and Policy Evaluation.” Journal of Economic Perspectives 31 (2): 3–32. https://doi.org/10.1257/jep.31.2.3.
Bertrand, Marianne, and Sendhil Mullainathan. 2004. “Are Emily and Greg More Employable Than Lakisha and Jamal? A Field Experiment on Labor Market Discrimination.” American Economic Review 94 (4): 991–1013. https://doi.org/10.1257/0002828042002561.
Xie, Yihui, Joseph J Allaire, and Garrett Grolemund. 2018. R Markdown: The Definitive Guide. Chapman; Hall/CRC.

1. la note de bas de page.↩︎

2. une note de bas de page plus longue.

Dans laquelle on peut écrire un paragraphe.

{ du code }

Plusieurs paragraphes, même.↩︎

3. On utilise les propriétés suivantes : $$\frac{\partial \boldsymbol x^t \boldsymbol A}{\partial \boldsymbol x} = \boldsymbol A^t$$, $$\frac{\partial \boldsymbol A \boldsymbol x}{\partial \boldsymbol x} = \boldsymbol A$$ et $$\frac{\partial a \boldsymbol \varepsilon}{\partial \boldsymbol x} = a \frac{\partial u}{\partial \boldsymbol x}$$, avec $$u = u(\boldsymbol x)$$.↩︎