“…Stabilisation of prices, such as for recycling products, is described as market support. Jeanrenaud (1997) forms three categories of environmental policy instruments according to the role of the state: (1) direct government intervention, that is, expenditures by the state to create, operate, and maintain infrastruc-tures (public anti-pollution investment) and to finance research; (2) measures to change practices (behaviour modification), including information and moral suasion, command-and-control, incentive-based regulations, and privatisation, whereby the incentive-based regulations include all of the "classical" economic instruments (charges, tradable permits, deposit-refund systems, joint implementation); and (3) "laissez-faire", where the actors influenced participate voluntarily, and the role of the state is restricted to defining clear property rights and liability for damages.…”