1. Water management and protection in Italy;Alberton,2012
2. Incentive regulation and investment: evidence from European energy utilities;Cambini;J. Regul. Econ.,2009
3. Multiple Attribute Decision Making;Ching-Lai,1981
4. Council Directive 91/271/EEC of 21 May 1991 concerning urban waste-water treatment.
5. Council Regulation (EC) n. 1083/2006 of 11 July 2006 laying down general provisions on the European Regional Development Fund, the European Social Fund and the Cohesion Fund and repealing Regulation (EC) No 1260/1999.