Karthikeyan, K., Sosamma Jacob, and S. M. Purushothaman. 2007. “Field Evaluation of Egg Parasitoids, <I>Trichogramma japonicum</I> Ashmead and <I>Trichogramma chilonis</I> Ishii, Against Rice Yellow Stem Borer and Leaf Folder”. Journal of Biological Control 21 (2):261-65. https://doi.org/10.18311/jbc/2007/3858.