K, T., M. M, and V. P. “Efficacy of the Plant Products Acorus Calamus, Piper Longum, and Econeem Against the Larvae of Tobacco Caterpillar Spodoptera Litura Fab. (Lepidoptera: Noctuidae)”. Journal of Research in Biology, Vol. 1, no. 7, Nov. 2011, pp. 490-3, https://ojs.jresearchbiology.com/index.php/jrb/article/view/130.