Brown, A; Milton, M J T; Vargha, G M; Mounce, R*; Cowper, C*; Stokes, A*; Benton, A*; Bannister, M*; Ridge, A*; Lander, D*; Laughton, A* (2007) Comparison of methods for the measurement of hydrocarbon dew point of natural gas. NPL Report. AS 3