Footnote:
Aus: 29th European PV Solar Energy Conference and Exhibition : proceedings of the international conference held in Amsterdam, The Netherlands, 22 - 26 September 2014 / WIP; ed. by T. P. Bokhoven ... (Hrsg.). - München : WIP, 2014. - S. 821-824. - ISSN 2196-100X. - ISBN 3-936338-34-5