1. Aizak M, Otsuki A, Kawai T (1986) Relationship between loading and phytoplankton standing crop in outdoor experimental ponds with continuous flow systems. Water Res 20:859–864
2. An KG (2003) Spatial and temporal variabilities of nutrient limitation based on its in-situ experiments of nutrient enrichment bioassay. J Environ Sci Health. A Tox Hazard Subst Environ Engg 38:876–882
3. An KG, Park SS, Ahn KY, Urchin CG (2003) Dynamics of nitrogen, phosphorus, algal biomass, and suspended solids in an artificial lentic ecosystem and significant implications of regional hydrology on trophic status. J Environ Biol 24:29–38
4. Anonymous (1998) Economic survey of India. 1997–98
5. Anonymous (2002) Handbook of Agriculture 2002. ICAR New Delhi India