Ramanibai R. “New Report on Hydra Viridissima Pallas, 1766 (Cnidaria, Hydrozoa, Hydridae) from Chingleput Lake, Tamil Nadu- India”. Journal of Research in Biology, Vol. 1, no. 4, Aug. 2011, pp. 276-8, https://ojs.jresearchbiology.com/ojs1/index.php/jrb/article/view/93.