Influence of dissolved organic carbon on toxicity of copper to a unionid mussel (Villosa iris) and a cladoceran (Ceriodaphnia dubia) in acute and chronic water exposures - Wang, Ning; Mebane, Christopher; Kunz, James; Ingersoll, Christopher; Brumbaugh, William; Santore, Robert; Gorsuch, Joseph; Arnold, W. (Environmental Toxicology and Chemistry, 2011)