Robinson, R A; Coleman, M; Williams, M; Elliott, R; Clack, M; Curtis, A* (2008) Validation of an alternative method for the measurement of SO2 emissions using instrumental methods. NPL Report. AS 26

Robinson, R A; Whiteside, K; Elliott, R; Clack, M; Curtis, D* (2007) Study into the loss of material from filters used for collecting particulate matter during stack emissions monitoring. NPL Report. AS 18