Rio Grande PSP
www.rocscience.com/hoek/pdf/Chapter_6_of_Rock_Engineering.pdf

Diga di Arcichiaro
web.tiscali.it/DigadiArcichiaro

Rio Grande PSP
http://es.wikipedia.org/wiki/Complejo_Hidroeléctrico_Río_Grande

Gibe III - National Geographic, March 2010
http://ngm.nationalgeographic.com/2010/03/omo-river/olson-photography

Gibe III - BBC March 2009
http://news.bbc.co.uk/2/hi/in_depth/7937480.stm

Bumbuna - World Bank web site
http://web.worldbank.org

Italian Committee of Large Dams
www.itcold.it

Appassionati Italiani di Dighe
www.progettodighe.it

Georisorse - Geophysical Investigations for Dams
www.georisorse.it

International law firm - Studio Avv. F. Pietrangeli
www.avv-f-pietrangeli.net