1. AEGE (Spanish Association of Large Energy Consumers), 2007. Jornada sobre la liberalización energética, la seguridad de suministro y la competitividad de la industria española, Madrid, 11 de diciembre de 2007.
2. Alonso-Llorente, J.F., 2006. Integration of special generation within the Spanish Electric Power System operation perspective: connection and operation aspects. 3rd Feed-in Cooperation Workshop, Madrid.
3. APPA (Association of Small Renewable Energy Producers), 2002. APPA Info 9, December 2002. 〈http://www.appa.es〉.
4. APPA, 2003a. APPA Info 10, January 2003. 〈http://www.appa.es〉.
5. APPA, 2003b. The experience of Spanish Renewable Energy Developers (special edition EWEC-2003). 〈http://www.appa.es〉.