CURTIS, C. J., R. FLOWER, N. ROSE, J. SHILLAND, G. L. SIMPSON, S. TURNER, H. YANG, and S. PLA. “Palaeolimnological Assessment of Lake Acidification and Environmental Change in the Athabasca Oil Sands Region, Alberta”. Journal of Limnology, vol. 69, no. s1, Aug. 2010, pp. 92-104, doi:10.4081/jlimnol.2010.s1.92.