Sherwood, T R; Barham, R G (2004) A review of the relative technical and practical merits of the IEC reference coupler and artificial ear and their future role in pure-tone audiometry. NPL Report. DQL-AC 004

Sherwood, T R (2004) EUROMET Project 401 - harmonisation of audiometry measurements within Europe. NPL Report. DQL-AC 003

Sherwood, T R (1997) Euromet project 363 - harmonisation of audiometry measurements within Europe. Final Report. NPL Report. CMAM 1

Sherwood, T R; McNeill, H A; Torr, G R (1995) Differences in the performance of metal-and plastic-cased TDH-39 and TDH-49 audiometric earphones, and consequences for their calibration. NPL Report. RSA(EXT)0058