Biplab Patra. “Effect of Environmental Factors on Seasonal Abundance of a Coccid in Pteris Biaurita L. (Pteridaceae) from Deolo Hills, Kalimpong, West Bengal”. Journal of Research in Biology, Vol. 1, no. 7, Nov. 2011, pp. 550-6, https://ojs.jresearchbiology.com/index.php/jrb/article/view/143.