1. S.G. Anderson, The Laser Marketplace, Laser Focus World, 1998, pp. 78–97 (and the same report January 1997)
2. B.H.T. Chai, G. Loutts, J. Lefaucheur, X.X. Zhang, P. Hong, M. Bass, Comparison of laser performance of Nd-doped YVO4, GdVO4, Ca5(PO4)3F, FAP, Sr5(PO4)3F, SFAP or Sr5(VO4)3F, in: T.Y. Fan, Bruce, H.T. Chai (Eds.), OSA Proceedings on Advanced Solid State Lasers, vol. 20, Optical Society of America, Washington, DC, 1994, pp. 41–52