@inbook{NBERc8379,
 Crossref = "NBERhaus85-1",
 title = "Social Science Analysis and the Formulation of Public Policy: Illustrations of What the President "Knows" and How He Comes to "Know" It",
 author = "Ernst W. Stromsdorfer",
 BookTitle = "Social Experimentation",
 Publisher = "University of Chicago Press",
 pages = "257-282",
 year = "1985",
 URL = "http://www.nber.org/chapters/c8379",
}
@book{NBERhaus85-1,
 title = "Social Experimentation",
 author = "Jerry A. Hausman and David A. Wise",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "University of Chicago Press",
 year = "1985",
 URL = "http://www.nber.org/books/haus85-1",
}