1. Tungstic acid for preconcentration and determination of gaseous and particulate ammonia and nitric acid in ambient air;Braman;Analyt. Chem.,1982
2. A diffusion scrubber for the collection of atmospheric gases;Dasgupta;Atmospheric Environment,1984
3. Automated measurement of atmospheric trace gases. Diffusion-based collection and analysis;Dasgupta,1992
4. The Joint experiment on surface exchange of trace gases over the Leende heathland;Duyzer;TNO-report PU 92/015, TNO-IMW,1992
5. Atmospheric deposition of acidifying compounds in The Netherlands;Erisman,1992