Dey, Debjani, and Mir Samim Akhtar. “Spatial Distribution and Population Dynamics of Mustard Aphid (Lipaphis Erysimi) on Indian Mustard (Brassica juncea)*”. The Indian Journal of Agricultural Sciences, vol. 78, no. 8, Aug. 2008, https://epubs.icar.org.in/index.php/IJAgS/article/view/9857.