@inbook{NBERc3469,
 Crossref = "NBERmach72-1",
 title = "DIRECT INVESTMENT AND THE BALANCE OF PAYMENTS OF THE UNITED STATES: A PORTFOLIO APPROACH",
 author = "Martin F. J. Prachoway",
 BookTitle = "International Mobility and Movement of Capital",
 Publisher = "UMI",
 pages = "443-464",
 year = "1972",
 URL = "http://www.nber.org/chapters/c3469",
}
@book{NBERmach72-1,
 title = "International Mobility and Movement of Capital",
 author = "Fritz Machlup and Walter S. Salant and Lorie Tarshis",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "UMI",
 year = "1972",
 URL = "http://www.nber.org/books/mach72-1",
}