1. Sequential sampling of snow in a rural area. Experimentation and identification of the acidifying agents;Colin;Atmos. Environ.,1987
2. External Quality-assurance Results for the National Atmospheric Deposition Program/National Trends Network, 1997-99;Gordon,2003
3. An Assessment of Performance of Wet Atmospheric Deposition Samplers;Graham,1990
4. An Assessment of the Variability in Performance of Wet Atmospheric Deposition Samplers;Graham,1987
5. Statistics for Censored Environmental Data Using Minitab and R;Helsel,2012