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
Robinson, R A; Andrews, A; Gardiner, T D; Uprichard, I J; Woods, P T (1998) Differential absorption lidar measurements of VOC emissions from Wytch Farm crude oil gathering station. NPL Report. COEM 13