TY - CONF AU - Joseph Reader AU - Craig Sansonetti C2 - Proceedings of the 44th annual SPIE meeting and exhibition DA - 1999-07-01 LA - en M1 - 3818 PB - Proceedings of the 44th annual SPIE meeting and exhibition PY - 1999 TI - Modern Wavelength Standards in the Ultraviolet and Vacuum Ultraviolet ER -