Bergin, A., Cullen, J., Duffy, D., FitzGerald, J., Kearney, I., and McCoy, D. (2003). Medium-Term Review: 2003-2010, No. 9, ESRI Forecasting Series, Dublin: ESRI, https://www.esri.ie/publications/medium-term-review-2003-2010-no-9