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by Evans, David S.; Schmalensee, Richard
by Evans, David S.; Hagiu, Andrei; Schmalensee, Richard
by Schmalensee; Willig
by A. Denny Ellerman , Paul L. Joskow , Richard Schmalensee , Juan-Pablo Montero , Elizabeth M. Bailey
by Kochan, Thomas A.; Schmalensee, Richard
by David S. Evans; Richard Schmalensee
by MacAvoy, Paul W.; Schmalensee, Richard