TY - JOUR AU - M O'brien AU - D Burns C2 - Journal of Research of the National Institute of Standards and Technology DA - 2006-01-01 LA - en M1 - 111 PB - Journal of Research of the National Institute of Standards and Technology PY - 2006 TI - Comparison of the NIST and BIPM Standards for Air Kerma in Medium-Energy X-Rays ER -