Many industries and sectorsʺ of a modern economy display the interaction of private and public agents which forms the topic of this seminar. A first approximation classification identifies three broad types of situations, which beyond the prima facie similarity, are however radically different...

In contemporary market economies, firms typically adopt one or another of a small number of standard organizational forms, both in terms of ownership and in terms of commitments to contractual counterparties. This review essay, prepared as a chapter for the forthcoming Handbook of Organizational...