David S.Evans and Richard Schmalensee David S. Evans and Richard Schmalensee. by David S.Evans and Richard Schmalensee by David S. Evans, Andrei Hagiu, and Richard Schmalensee. (美)David S. Evans，(美)Andrei Hagiu，(美)Richard Schmalensee著 David Dudgeon and Richard Corlett David Dudgeon and Richard Corlett.