1. L. Johnson and P. Zuidema, Nagra Working Report NAB 13-38 (Wettingen, Switzerland: Nagra, May 2013).
2. Nagra Technical Report NTB 09-06, Wettingen, Switzerland, November 2009.
3. L. Johnson and F. King, J. Nucl. Mater. 379, 9 (2008).
4. R. Patel, C. Punshon, J. Nicholas, P. Bastid, R. Zhou, C. Schneider, N. Bagshaw, D. Howse, E. Hutchinson, R. Asano, and F. King, Nagra Technical Report NTB 12-06 (Wettingen, Switzerland: Nagra, October 2012).
5. D. Landolt, A. Davenport, J. Payer, and D. Shoesmith, Nagra Technical Report NTB 09-02 (Wettingen, Switzerland: Nagra, January 2009).