1. J. L. Shay and J. H. Wernick,Ternary Chalcopyrite Semiconductors: Growth, Electronic Properties and Applications(Pergamon, Oxford, 1974).
2. Silver Thiogallate and Related Diamond-Like Semiconductors for Nonlinear Optical Laser Devices
3. CO2 laser frequency doubling in ZnGeP2
4. P. A. Budni, K. Ezzo, P. G. Schunemann, S. Minnigh, J. C. McCarthy, and T. M. Pollak, edited by G. Dube and L. L. Chase,OSA Proceedings on Advanced Solid State Lasers(Optical Society of America, Washington, DC, 1991), Vol. 10, p. 335.
5. P. G. Schunemann, P. A. Budni, M. G. Knights, T. M. Pollak, E. P. Chicklis, and C. L. Marquardt,Advanced Solid State Lasers and Compact Blue-Green Laser Technical Digest(Optical Society of America, Washington, DC, 1993), Vol. 2, p. 131.