@inbook{NBERc9084,
 Crossref = "NBERsarg76-1",
 title = "Efficiency Frontiers for Industrial Establishments of Different Sizes",
 author = "Patricio Meller",
 BookTitle = "Explorations in Economic Research, Volume 3, number 3",
 Publisher = "NBER",
 pages = "77-105",
 year = "1976",
 URL = "http://www.nber.org/chapters/c9084",
}
@book{NBERsarg76-1,
 title = "Explorations in Economic Research, Volume 3, number 3",
 author = "NBER",
 institution = "National Bureau of Economic Research",
 type = "Book",
 publisher = "NBER",
 year = "1976",
 URL = "http://www.nber.org/books/sarg76-1",
}