Eckerle, K.
, Bastie, J.
, Zwinkels, J.
, Sapritsky, V.
and Ulyanov, A.
(1993),
Comparison of Regular Transmittance Scales of Four National Standardizing Laboratories, Color Research and Application, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=103728
(Accessed December 7, 2024)