1. Ahrens, A., Hansen, C. B., & Schaffer, M. E. (2018). Lasso2: Program for lasso, square-root lasso, elastic net, ridge, adaptive lasso and post-estimation OLS. http://ideas.repec.org/c/boc/bocode/s458458.html (Revised 24 January 2019).
2. Formal and real authority in organizations;Aghion;Journal of Political Economy,1997
3. Site selection bias in program evaluation;Allcott;Quarterly Journal of Economics,2015
4. Gender, competitiveness, and socialization at a young age: Evidence from a matrilineal and a patriarchal society;Andersen;Review of Economics and Statistics.,2013
5. Andrews. I., & Oster, E. (2017). Weighting for external validity. NBER Working Paper No. 23826. National Bureau of Economic Research, Cambridge, MA.