@techreport{ w13594,
 title = "Measuring the Values for Time",
 author = "Raymond B. Palmquist and Daniel J. Phaneuf and V. Kerry Smith",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "13594",
 year = "2007",
 month = "November",
 URL = "http://www.nber.org/papers/w13594",
}