@techreport{NBERw5871,
 title = "Solow vs. Solow: Machine Prices and Development",
 author = "Boyan Jovanovic and Rafael Rob",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "5871",
 year = "1997",
 month = "January",
 URL = "http://www.nber.org/papers/w5871",
 abstract = {Machines are more expensive in poor countries, and the relation is pronounced.  It is hard for a Solow (1956) type of model to explain the relation between machine prices and GDP given that in most countries equipment investment is under 10% of GDP.  A stronger relation emerges in a Solow (1959) type of vintage model in which technology is embodied in machines.},
}