1. Tecnología popular española;Caro-Baroja,1996
2. Origin and expansion of windmills in Spain;Rojas-Sola;Interciencia,2005
3. La energía eólica: tecnología e historia;Cádiz-Deleito,1984
4. Introduction to the theory of flow machines;Betz,1966
5. Wind machines;Eldridge,1980