O\'Brien, C.
, Lamperti, P.
, Williams, T.
and Sander, T.
(2000),
Comparison of the NIST and NPL Air Kerma Standards Used for X-ray Measurements Between 10 kV and 80 kV, http://nvl.nist.gov/pub/nistpubs/ Jres/105/5/cnt105-5.htm, [online], http://nvl.nist.gov/pub/nistpubs/ Jres/105/5/cnt105-5.htm
(Accessed November 13, 2024)