1. Apseridou M. E., Wind Energy — Regulatory frmawork and Economical Analysis, Diploma thesis, National Technical University of Athens, Athens, 2002 (in Greek).
2. Castro M., Delgado A., Argul F.J., Colmenar A., Yeves F. and Peire J., “Grid-connected PV buildings: analysis of future scenarios with an example of Southern Spain,” Solar Energy, In press, 2004.
3. Duffie J. A., Beckman W. A., Solar engineering of thermal processes, John Willey and sons, Inc, Second edition, 1991.
4. Haas R., Ornetzeder M., Hametner K., Wroblewski A. and Hübner M., “Socio-economic aspects of the Austrian 200 kWp-photovoltaic-rooftop programme,” Solar Energy, vol. 66, no 3, 1999, pp. 183–191.
5. IEA, “Trends in Photovoltaic Applications — Survey report of selected IEA countries between 1992 and 2002,” Report IEA-PVPS T1-12:2003, (it can be downloaded from the URL address: http://www.oja-services.nl/ieaps/products/download/rep1_11.pdf that is accessed on 31/3/2005).