R. Rangeshwaran, K. Veenakumari, P. Karmakar, K. Ashwitha, G. Sivakumar, and S. Kumar, “Characterization and Evaluation of Two Indigenous <I>Bacillus thuringiensis</I> Isolates against <I>Helicoverpa armigera</I> Hubner”, JBC, vol. 25, no. 4, pp. 286–293, Oct. 2013.