@techreport{NBERw3076,
 title = "Distance, Demand, and Oligopoly Pricing",
 author = "Robert C. Feenstra and James A. Levinsohn",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "3076",
 year = "1989",
 month = "August",
 URL = "http://www.nber.org/papers/w3076",
 abstract = {We demonstrate how to estimate a model of product demand and oligopoly pricing when products are multi-dimensionally differentiated. We provide an empirical counterpart to recent theoretical work on product differentiation. Using specifications informed by economic theory, we simultaneously estimate a demand system and price-cost margins for products differentiated in many dimensions.},
}