@BOOK{NAP9696, title = "Data and Methodological Issues for Tracking Former Welfare Recipients: A Workshop Summary", doi = "10.17226/9696", url = "https://nap.nationalacademies.org/catalog/9696/data-and-methodological-issues-for-tracking-former-welfare-recipients-a", year = 1999, publisher = "The National Academies Press", address = "Washington, DC" }