Date: 1995-11 Note: This paper was presented by Daniel McFadden at the World Congress of the Econometric Society, August 1995. The manuscript is in compressed postscript format, viewable in browsers that can spawn an external viewer like ghostscript.Figures 1 - 15. Please note that if you view the figures, you will need to have the viewer rotate them 90 degrees, from a portrait to landscape orientation. References:Add references at CitEc CitationsView citations in EconPapers (20) Track citations by RSS feed