Milton, M J T; Woods, P T; Holland, P E (2002) Uncertainty reduction due to correlation effects in weighing during the preparation of primary gas standards. Metrologia, 39. pp. 97-99.

Milton, M J T; Holland, P E; Davenport, A J; Brookes, C; Woods, P T (2001) Sources of uncertainty in the gravimetric preparation of a binary gas standard on a twin-pan balance. NPL Report. COEM 60

Holland, P E; Woods, P T; Brookes, C; Uprichard, I J; Quincey, P; Robinson, R A; D'Souza, H; Milton, M J T; Goody, B; Bell, W; Alphonso, D (2001) The development of gas standards and calibration techniques for measurements of vehicle, aircraft and industrial emissions, natural gas, occupational exposure and air quality. Accred. Qual. Assur., 6 (3). pp. 120-129.

Holland, P E; Davenport, A J; Uprichard, I J; D'Souza, H; Alphonso, D; Woods, P T; Milton, M J T (2000) The preparation and certification of secondary gas standards by the National Physical Laboratory. NPL Report. COEM 54

Gardiner, T; Wielgosz, R; Holland, P E; Brown, A; D'Souza, H; Henderson, M (2000) Odour standards, measurements and characterisation. NPL Report. COEM 56

Partridge, R H; Woolley, A M; Holland, P E (1998) Report on the requirements for new inorganic gas standards for the 1997-2000 valid analytical measurement programme. NPL Report. COEM 18

Davenport, A J; Holland, P E; Woods, P T; Milton, M J T (1996) Summary of comparisons of gas standards between NPL and NIST. NPL Report. COEM 20