Suvarna, et al. “Screening of Germplasm Against Alternaria Leaf Spot in Niger (Guizotia Abbyssinica (L.F.) Cass)”. International Journal of Bio-Resource and Stress Management, vol. 11, no. Feb, 1, Mar. 2020, pp. 040-5, https://ojs.pphouse.org/index.php/IJBSM/article/view/3961.