Singh, Prabhash C., Rajesh Kumar, Major Singh, Ashutosh Rai, M.C. Singh, and Mathura Rai. 2011. “Identification of Resistant Sources Against Early Blight Disease of Tomato”. Indian Journal of Horticulture 68 (04):516-21. https://journal.iahs.org.in/index.php/ijh/article/view/1946.