Crettenand, N. (2012). The facilitation of mini and small hydropower in Switzerland: shaping the institutional framework. With a particular focus on storage and pumped-storage schemes (Thesis). École Polytechnique Fédérale de Lausanne. p. 266. doi:10.5075/epfl-thesis-5356. S2CID36519663. PhD Thesis N° 5356.
"2013 Accomplishment Report"(PDF). Small Power Utilities Group, National Power Corporation. Archived from the original(PDF) on 4 March 2016. Retrieved 15 September 2015.
Crettenand, N. (2012). The facilitation of mini and small hydropower in Switzerland: shaping the institutional framework. With a particular focus on storage and pumped-storage schemes (Thesis). École Polytechnique Fédérale de Lausanne. p. 266. doi:10.5075/epfl-thesis-5356. S2CID36519663. PhD Thesis N° 5356.
"2013 Accomplishment Report"(PDF). Small Power Utilities Group, National Power Corporation. Archived from the original(PDF) on 4 March 2016. Retrieved 15 September 2015.