and D. P. Thakur, N. N. Tripathi, Sushil Shanna. “Laboratory Manual of Plant Pathology”. Indian Phytopathology 44, no. 2 (January 19, 2002): 263–264. Accessed June 5, 2026. https://epubs.icar.org.in/index.php/IPPJ/article/view/22091.