– Film historique de la Constructing de l’aménagement Hydro-électrique de pompage-turbinage de l’Hongrin (1972), Suisse.
– Constructing of the Hydro-electric pump-turbine vogue of Hongrin (1972) Switzerland.
This 240MW vogue is the vital in Switzerland incorporating on daily foundation-cycle pumped storage ina large scale.
– Bau von Wasserpumpspeicher Hongrin (1972), Schweiz.