•    European Commission – LIFE Programme
http://ec.europa.eu/environment/life/
•    European Climate Adaptation Platform
https://climate-adapt.eea.europa.eu/
•    Covenant of Mayors for Climate & Energy
https://www.covenantofmayors.eu/
•    European Environment Agency
https://www.eea.europa.eu/
•       Urban Green Management System – GreenTree
http://www.greentree.gr/