@article {2016,
	title = {Toxicity of soluble copper and other metal ions to Elodea canadensis},
	journal = {Environmental Pollution},
	year = {1979},
	pages = {303-314},
	author = {Brown, B. T and Rattigan, B. M}
}
@article {1978,
	title = {Toxicity of soluble copper and other metal ions to Elodea canadensis.},
	journal = {Environmental Pollution},
	year = {1979},
	pages = {303-314},
	author = {Brown, B. T and Rattigan, B. M}
}
