@inbook{NBERc1534,
 Crossref = "NBERjust66-2",
 title = "CRITERIA TO MEASURE THE GAIN IN ACCURACY",
 author = "F. Thomas Juster",
 BookTitle = "Consumer Buying Intentions and Purchase Probability: An Experiment in Survey Design",
 Publisher = "UMI",
 pages = "9-12",
 year = "1966",
 URL = "http://www.nber.org/chapters/c1534",
}
@book{NBERjust66-2,
 title = "Consumer Buying Intentions and Purchase Probability: An Experiment in Survey Design",
 author = "F. Thomas Juster",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "UMI",
 year = "1966",
 URL = "http://www.nber.org/books/just66-2",
}