@techreport{NBERw13864,
 title = "Monopoly and the Incentive to Innovate When Adoption Involves Switchover Disruptions",
 author = "Thomas J. Holmes and David K. Levine and James A. Schmitz, Jr.",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "13864",
 year = "2008",
 month = "March",
 URL = "http://www.nber.org/papers/w13864",
}