TY - RPRT TI - NIST Center for Neutron Research AU - Rowe, J Michael AU - Rowe, J Michael AU - Cappelletti, Ronald L AU - Clutter, Linda K PY - 2000 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST SP 944 DO - 10.6028/NIST.SP.944 ER -