1. Baiocchi, M., Small, D.S., Lorch, S., Rosenbaum, P.R.:
Building a stronger instrument in an observational study of perinatal care for premature infants. J. Am. Stat. Assoc. 105, 1285–1296 (2010)
2. Baiocchi, M., Small, D.S., Yang, L., Polsky, D.,
Groeneveld, P.W.: Near/far matching: a study design approach to instrumental variables. Health Serv. Outcomes Res. Method 12, 237–253 (2012)
3. Cahuc, P., Carcillo, S., Zylberberg, A.:
Labor Economics (2nd edn.). MIT Press, Cambridge (2014)
4. Card, D., Krueger, A.B.: Minimum wages and employment: a case study of the fast-food industry in New Jersey and Pennsylvania. Am. Econ. Rev. 84, 772–793 (1994)
5. Card, D., Krueger, A.B.:
Myth and Measurement: The New Economics of the Minimum Wage. Princeton University Press, Princeton (1995). Data:
http://www.irs.princeton.edu/