Baral, Bikash, and Geeta Shrestha Vaidya. “Biological and Chemical Assessment of Water Hyacinth (<i>Eichhornia crassipes< I> (mart.) Solms.) of Phewa Lake, Nepal”. Scientific World, vol. 9, no. 9, Nov. 2011, pp. 57-62, doi:10.3126/sw.v9i9.5520.