Useful information Links:
I-GET web site of GFZ: http://www.gfz-potsdam.de/pb5/pb52/projects/IGET/ewelcome.html

ENGINE project: http://engine.brgm.fr/

ENGINE geothermal digital library: http://engine.isti.cnr.it/

International Geothermal Association: http://www.geothermal-energy.org