and R.S. JAMWAL, C.L. BHARDWAJ, B.K. SHARMA. “Effect of Dates of Sowing and Frost Protection on the Incidence of Bacterial Blight in Pea”. Indian Phytopathology, vol. 45, no. 2, Jan. 2012, pp. 221-2, http://epubs.icar.org.in/index.php/IPPJ/article/view/21612.