"We consider nonparametric identification in models of differentiated products markets, using only market level observables. On the demand side we consider a non-parametric random utility model nesting random coefficients discrete choice models widely used in applied work. We allow for...

We describe an ongoing research project, in which we examine recent trends in bidding for offshore oil and gas leases, and the exploration and development of leases after they are sold. We review empirical findings regarding bidder participation and bidding for the period 1954 through 1982. In...