@article {1915,
	title = {Daphnia magna as a model to assess heavy metal toxicity: comparative assessment with the mouse system},
	journal = {Acta Hydrochim Hydrobiol},
	year = {1987},
	pages = {427-432},
	author = {Khangarot, B. S and Ray, P. K}
}
@article {1981,
	title = {Sensitivity of toad tadpoles, Bufo melanostictus (Schneider), to heavy metals},
	journal = {Bulletin of Environmental Contamination and Toxicology},
	year = {1987},
	pages = {523-527},
	author = {Khangarot, B. S and Ray, P. K}
}
