S.F. Christopher
Kerr, J. G., M. C. Eimers, I.F. Creed, M.B. Adams, F. Beall, D.A. Burns, John L. Campbell, et al. 2012. “The Effect Of Seasonal Drying On Sulphate Dynamics In Streams Across Southeastern Canada And The Northeastern Usa”. Biogeochemistry. doi:10.1007/s10533-011-9664-1.
Campbell, John L., Lindsey E. Rustad, E.W. Boyer, S.F. Christopher, Charles T. Driscoll, I.J. Fernandez, Peter M. Groffman, et al. 2009. “Consequences Of Climate Change For Biogeochemical Cycling In Forests Of Northeastern North America”. Can. J. For. Res. 39. doi:10.1139/X08-104.