Nagaraju, A., M. Murali, J. Sudisha, K. N. Amruthesh, and S. Mahadeva Murthy. “Beneficial Microbes Promote Plant Growth and Induce Systemic Resistance in Sunflower Against Downy Mildew Disease Caused by Plasmopara Halstedii”. Current Botany, vol. 3, no. 5, Jan. 2013, https://updatepublishing.com/journal/index.php/cb/article/view/1428.