N. Anterhaus, A. Y. Hamad, J. J. Martin, C. A. Hunt, and J. P. Wicksted, "The effect of irradation on the grating strength formed in
Eu<sup>3+</sup>-doped and un-doped aluminosilicate
in Frontiers in Optics,
OSA Technical Digest (CD)
(Optical Society of America, 2003), paper ThA7.