Malarvannan S, S Kumar S, Giridharan R, Nair S.  2008.  BIOEFFICACY OF Argemone mexicana AGAINST AMERICAN BOLLWORM, Helicoverpa armigera (HUBNER) (NOCTUIDAE: LEPIDOPTERA). Hexapoda. 15(1):55.

Malarvannan S., S. Kumar S, Giridharan R., Nair S.  2008.  Bioefficacy of Argemone mexicana against American Bollworm, Helicoverpa armigera (Hubner) (Noctuidae: Lepidoptera). Hexapoda. 15(1):55.

Malarvannan S., S. Kumar S, Prabavathy V.R., Nair S..  2008.  Individual and Synergistic Effects of Leaf Powder of Few Medicinal Plants against American Bollworm, Helicoverpa armigera (Hubner) (Noctuidae: Lepidoptera). Asian journal of experimental sciences. 22(1):88.

Malarvannan S., Senthilkumar S., Prabavathy V.R., Nair S..  2008.  Individual and Synergistic Effects of Leaf Powder of Few Medicinal Plants against American Bollworm, Helicoverpa armigera (Hubner) (Noctuidae: Lepidoptera). Asian Journal of Experimental Sciences. 22:88.