Beccaceci, S; Muhunthan, D; Sarantaridis, D; Tompkins, J; Butterfield, D M; Quincey, P; Brown, R J C; Green, D*; Grieve, A*; Fuller, G*; Jones, A* (2011) CPEA 28: Airborne particulate concentrations and numbers in the United Kingdom (phase 2). NPL Report. AS 65

Brown, R J C; Butterfield, D M; Goddard, S L; Muhunthan, D; Robins, C; Brown, A S; Beccaceci, S; Williams, M (2011) Report to the Department of Environment, Food and Rural Affairs, the Welsh Government, the Department of the Environment in Northern Ireland, and the Scottish Government, by the National Physical Laboratory: Annual report for 2010 on the UK Heavy Metals Monitoring Network. NPL Report. AS 61

Brown, R J C; Muhunthan, D (2011) Uncertainty-weighted time averaging of mercury vapour concentrations in ambient air: application to measurements in the United Kingdom. TheScientificWorld Journal, 11 (Februa). pp. 242-252.

Beccaceci, S; Muhunthan, D; Butterfield, D M; Gilham, R; Tompkins, J; Sweeney, B; Brown, R J C; Quincey, P; Green, D*; Alexander, J*; Grieve, A* (2010) CPEA 28: Airborne particulate concentrations and numbers in the United Kingdom (phase 2) 2009 annual audit report. NPL Report. AS 51

Brown, R J C; Butterfield, D M; Goddard, S L; Muhunthan, D; Brown, A S; Beccaceci, S; Williams, M (2010) Annual Report for 2009 on the UK Heavy Metals Monitoring Network. NPL Report. AS 49

Beccaceci, S; Butterfield, D M; Hayman, G; Muhunthan, D; Quincey, P; Sweeney, B P; Alexander, J*; Green, D* (2009) CPEA 28: Airborne particulate concentrations and numbers in the United Kingdom (phase 2) annual Report - 2008. NPL Report. AS 46

Brown, R J C; Butterfield, D M; Goddard, S L; Muhunthan, D; Brown, A S; Williams, M (2009) Annual Report for 2008 on the UK Heavy Metals Monitoring Network. NPL Report. AS 34

Brown, R J C; Butterfield, D M; Goddard, S L; Muhunthan, D; Williams, M; Yardley, R E (2008) Annual Report for 2007 on the UK Heavy Metals Monitoring Network. NPL Report. AS 20

Muhunthan, D; Yardley, R E; Butterfield, D M (2008) Report on the organic carbon/elemental carbon (OC/EC) and anion analysis of filter PM samples from Auchencorth Moss. NPL Report. AS 21

Brown, R J C; Yardley, R E; Muhunthan, D; Butterfield, D M; Williams, M; Woods, P T; Brown, A S; Goddard, S L (2008) Twenty-five years of nationwide ambient metals measurement in the United Kingdom: concentration levels and trends. Environ. Monit. Assess., 142 (1-3). pp. 127-140.

Brown, R J C; Williams, M; Butterfield, D M; Yardley, R E; Muhunthan, D; Goddard, S L (2007) Report to the Department of Environment, Food and Rural Affairs by the National Physical Laboratory: annual report for 2006 on UK Heavy Metals Monitoring Network. NPL Report. DQL-AS 036

Brown, R J C; Williams, M; Butterfield, D M; Yardley, R E; Muhunthan, D; Woods, P T (2006) Annual report for 2005 on the UK Heavy Metals Network. NPL Report. DQL-AS 026