Rangeshwaran, R., 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”. Journal of Biological Control, vol. 25, no. 4, Oct. 2013, pp. 286-93, doi:10.18311/jbc/2011/3710.