N. Kuleshov, M. Mond, E. Heumann, H. Kretschmann, S. Kueck, G. Huber, V. I. Levchenko, and V. N. Yakimovich, "
Continuous wave diode pumped Cr2+:ZnSe and high power laser operation,"
in Advanced Solid-State Lasers, C. Marshall, ed.,
Vol. 50 of OSA Trends in Optics and Photonics
(Optical Society of America, 2001), paper MC3.