S.V. Gregory
Webster, J.R., P.J. Mulholland, J.L. Tank, H.M. Valett, Walter K. Dodds, B.J. Peterson, W.B. Bowden, et al. 2003. “Factors Affecting Ammonium Uptake in Streams – an Inter-Biome Perspective”. Freshwater Biology 48 (8): 1329-52. doi:10.1046/j.1365-2427.2003.01094.x.
Mulholland, P.J., J.L. Tank, J.R. Webster, W.B. Bowden, W. K. Dodds, S.V. Gregory, N. B. Grimm, et al. 2002. “Can Uptake Length in Streams Be Determined by Nutrient Addition Experiments? Results from an Interbiome Comparison Study”. Journal of the North American Benthological Society 21: 544-60. doi:10.2307/1468429.