T. T. K. Thenuwara,  M. R. Wijesinghe, D. N. de Silva & R. D. Wijesekera (2013). Nitrate and Phosphate toxicity on postlarvae of the giant fresh water prawn (Macrobrachium rosenbergii): individual and synergistic effects. Proceedings of the Eighteenth International Forestry and Environment Symposium. p. 15