@inbook{NBERc10203,
 Crossref = "NBERaesm74-4",
 title = "Estimation of Systems of Simultaneous Equations, and Computational Specifications of GREMLIN",
 author = "David A. Belsley",
 BookTitle = "Annals of Economic and Social Measurement, Volume 3, number 4",
 Publisher = "NBER",
 pages = "1-64",
 year = "1974",
 month = "October",
 URL = "http://www.nber.org/chapters/c10203",
}
@book{NBERaesm74-4,
 title = "Annals of Economic and Social Measurement, Volume 3, number 4",
 author = "Sanford V. Berg, editor",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "NBER",
 year = "1974",
 URL = "http://www.nber.org/books/aesm74-4",
}