Miller, Cynthia, Lawrence F. Katz, Gilda Azurdia, Adam Isen, Caroline B. Schultz, and Kali Aloisi (2018). Boosting the earned income tax credit for singles: Final impact findings from the Paycheck Plus Demonstration in New York City, New York: MDRC. Available at https://www.mdrc.org/publication/boosting-earned-income-tax-credit-singles.