TY - BOOK AU - Brown, Randall, ed. TI - Helmet- and Head-Mounted Displays XI: Technologies and Applications T2 - Proceedings of SPIE; V. 6224 SN - 9780819462800 (Print) PY - 2006/// CY - Washington, USA PB - SPIE UR - https://www.spiedigitallibrary.org/conference-proceedings-of-spie/6224 ER -