Khangarot BS, Ray PK. Daphnia magna as a model to assess heavy metal toxicity: comparative assessment with the mouse system. Acta Hydrochim Hydrobiol. 1987  ;(15):427-432.

Khangarot BS, Ray PK. Sensitivity of toad tadpoles, Bufo melanostictus (Schneider), to heavy metals. Bulletin of Environmental Contamination and Toxicology. 1987  ;(38):523-527.