@inbook{NBERc3963,
 Crossref = "NBERterl76-1",
 title = "Estimates of a Human Capital Production Function Embedded in a Life-Cycle Model of Labor Supply",
 author = "James J. Heckman",
 BookTitle = "Household Production and Consumption",
 Publisher = "NBER",
 pages = "225-264",
 year = "1976",
 URL = "http://www.nber.org/chapters/c3963",
}
@book{NBERterl76-1,
 title = "Household Production and Consumption",
 author = "Nestor E. Terleckyj",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "NBER",
 year = "1976",
 URL = "http://www.nber.org/books/terl76-1",
}