Barrett, A. (1997). Theory of Economic Instruments: The Fiscal System and the Polluter Pays Principle, Alan Barrett, John Lawlor, Sue Scott, The Fiscal System and the Polluter Pays Principle: A Case Study of Ireland, Aldershot: Ashgate, https://www.esri.ie/publications/theory-of-economic-instruments-the-fiscal-system-and-the-polluter-pays-principle