Barry N. Taylor and Chris E. Kuyatt
Physics Laboratory
National Institute of Standards and Technology
Gaithersburg, MD 20899-0001
(Supersedes NIST Technical Note 1297, January 1993)
September 1994
U.S. Department of Commerce
Ronald H. Brown, Secretary
Technology Administration
Mary L. Good, Under Secretary for Technology
National Institute of Standards and Technology
Arati Prabhakar, Director