1. Ignoring private information costs, it makes no difference whether any entity internalizes harm or a tax;A Pigouvian tax can be levied on activities of externality-absorbing entities, as indicated by Coase (1960) and Buchanan and Stubblebine,1962
2. Assessment of Adaptation Practices, Options, Constraints and Capacity;W Adger;Climate Change 2007: Impacts, Adaptation and Vulnerability,2007
3. Externality