Hanson, A R; Taylor, J A F; Basu, M A; Williams, D C; Zwinkels, J*; Czepluch, W* (2000) Report on project QR9816B1 gloss measurements at NPL. NPL Report. COEM 47
Williams, D C (1995) Fluorescent standards for surface colour. NPL Report. QU 111
Williams, D C (1998) The establishment of absolute diffuse reflectance scales using the NPL Reference Reflectometer. Anal. Chim. Acta, 380 (2-3). pp. 165-172.
Williams, D C; Banyard, J E (1993) Comparison of long-range and interferometric laser distance instruments using multiply reflections. Proc. SPIE - Int. Soc. Opt. Eng., 2088. pp. 46-54.
Williams, D C (1995) A new reference instrument for fluorescent surface colours. In: Colour Communication Conference, April 1995, Manchester, UK.
Verrill, J F; Williams, D C (1995) The development of a new reference spectrofluorimeter at the National Physical Laboratory. In: Spectrophotometry, luminescence and colour; science and compliance.(Burgess, C, and Jones, D G, eds). Amsterdam, Elsevier, pp. 111-115.