 There are also goods that are rivalrous and non-excludable and goods that are non-rival and excludable. The former are sometimes called “common pool resources” (e.g., V. Ostrom &amp; E. Ostrom 1977, E. Ostrom et al. 1994; E. Ostrom 2003). An example is fish stocks. The latter are sometimes called “club goods” (e.g., Mankiw 2012: 219; see also Buchanan 1965). Examples include watching a movie in a cinema and the services provided by social and religious associations.