@inbook{NBERc1110,
 Crossref = "NBERbart68-1",
 title = "Front matter,"Pension Funds of Multiemployer Industrial Groups, Unions, and Nonprofit Organizations" ",
 author = "H. Robert Bartell and Elizabeth T. Simpson",
 BookTitle = "Pension Funds of Multiemployer Industrial Groups, Unions, and Nonprofit Organizations",
 Publisher = "UMI",
 year = "1968",
 URL = "http://www.nber.org/chapters/c1110",
}
@book{NBERbart68-1,
 title = "Pension Funds of Multiemployer Industrial Groups, Unions, and Nonprofit Organizations",
 author = "H. Robert Bartell and Elizabeth T. Simpson",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "UMI",
 year = "1968",
 URL = "http://www.nber.org/books/bart68-1",
}