1. Photon International. Market survey on concentrating PV. November 2008, p. 146.
2. Photon International. Emancipation from subsidy programs. December 2008, p. 84.
3. Photon International. Avancis launches CIS module production. November 2008, p. 32.
4. Photon International. Demand in doubt. December 2008, p. 74.
5. Photon International. The new modules based on UMG differ from standard products. December 2008, p. 94.