Kramer, G.
, Travis, J.
, Faison, C.
and Rasberry, S.
(2000),
National voluntary laboratory accreditation program: chemical calibration certifiers of spectrophotometric NTRMs:, , National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NIST.HB.150-21
(Accessed January 2, 2025)