1. P. Torres, Ph.D. Thesis Uni Neuchâtel, ISBN 3-930803-51-8, UFO Konstanz (D) 1999, www.ufo.znet.de.
2. J. Meier, H. Keppner, S. Dubail, U. Kroll, P. Torres, P. Ziegler, J.A. Anna Selvan, J Cuperus, D. Fischer, A. Shah, Mat. Res. Soc. Symp. Proc. Vol. 507, p. 139.
3. N. Wyrsch, P. Torres, M. Goetz, S. Dubail, L. Feitknecht, J. Cuperus, A. Shah, B. Rech, O. Kluth, S. Wieder, O. Vetterl, H. Stiebig, C. Beneking, H. Wagner, Proceedings of 2nd WCPEC (Vienna 1998) p. 467.
4. P. Torres, J. Meier, U. Kroll, N. Beck, H. Keppner, A. Shah, Proceedings of 26th PVSC (Anaheim, 1997) p. 711–714.
5. Device grade microcrystalline silicon owing to reduced oxygen contamination