TY - BOOK AU - Petroff, Yves, ed. TI - Free Electron Lasers II T2 - Proceedings of SPIE; V. 1133 SN - 9780819401694 (Print) PY - 1989/// CY - Washington, USA PB - SPIE UR - https://www.spiedigitallibrary.org/conference-proceedings-of-spie/1133 ER -