http://www.b2green.gr/main.php?pID=38&gC=10&aT=5&lang=el
http://www.energypress.gr/news/oikonomia-energias
http://web.tee.gr/
http://www.etean.com.gr/PublicPages/HomePage.aspx
http://www.eurobank.gr/online/home/popsnew.aspx?mid=504&lang=gr#GeoStart
