За повече информация

Сайтове

http://www.erec-renewables.org

http://europa.eu.int

http://www.iash.info

http://www.eee.ntu.ac.uk

http://home.carolina.rr.com

http://www.smakraftverk.com

Книги

Minicentrales hidroelectrcas, 1996, Instituto para la Diversification y Ahorro de la Energia, Madrid, Spain

European Directory of Renewable Energy Suppliers and services, 1994, James&James Ltd., London, UK