Chennippan, K., V. Chellamuthu, A. Dhandapani, and M. Kadarkarai. “Synergistic Activity of Andrographis Paniculata Nees With Bacilus Thuringiensis Var Israelensis Against Malarial Vector, Anopheles Stephensi Liston (Diptera: Culicidae)”. Journal of the Entomological Research Society, vol. 13, no. 3, Dec. 2011, pp. 71-86, https://www.entomol.org/journal/index.php/JERS/article/view/335.