WHITFIELD, C. J., J. AHERNE, S. A. WATMOUGH, and M. McDONALD. “Estimating the Sensitivity of Forest Soils to Acid Deposition in the Athabasca Oil Sands Region, Alberta”. Journal of Limnology, vol. 69, no. s1, Aug. 2010, pp. 201-8, doi:10.4081/jlimnol.2010.s1.201.