PARMOD KUMAR SINGH, RAMESH CHAND, ROOPALI SINGH* and. “Distribution of Pathogenic Groups and Races in Xanthomonas Campestris Pv. Vesicatoria in the Peninsular India”. Indian Phytopathology, vol. 47, no. 3, Jan. 2002, pp. 251-2, https://epubs.icar.org.in/index.php/IPPJ/article/view/21100.