M. B. Camargo, R. D. Stultz, M. Birnbaum, and K. Spariosu, "Novel erbium-doped crystal saturable absorber Q-switches for the Er:glass laser,"
in Conference on Lasers and Electro-Optics, T. Baer, A. Smirl, J. Bowers, and D. Miller, eds.,
Vol. 8 of OSA Technical Digest
(Optical Society of America, 1994), paper CTuK53.