TY - SER AU - Watts, R AU - Ederer, D AU - Lucatorto, Thomas AU - Isaacson, M C2 - Optical Society of America, Washington, DC DA - 1991-01-01 LA - en PB - Optical Society of America, Washington, DC PY - 1991 TI - National Institute of Standards and Technology Metrology for Soft-X-Ray Multilayer Optics, ER -