Baskar, K., R. Maheswaran, S. Kingsley, and S. Ignacimuthu. “Bioefficacy of Couroupita Guianensis (Aubl) Against Helicoverpa Armigera (Hub.) (Lepidoptera: Noctuidae) Larvae”. Spanish Journal of Agricultural Research, Vol. 8, no. 1, Mar. 2010, pp. 135-41, doi:10.5424/sjar/2010081-1152.