TY - BOOK AU - Yu, Francis, ed. TI - Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications III T2 - Proceedings of SPIE; V. 3137 SN - 9780819425591 (Print) PY - 1997/// CY - Washington, USA PB - SPIE UR - https://www.spiedigitallibrary.org/conference-proceedings-of-spie/3137 ER -