P. M. YADAV, et al. “EVALUATION OF BIOAGENTS FOR MANAGEMENT OF THE ONION PURPLE BLOTCH AND BULB YIELD LOSS ASSESSMENT UNDER FIELD CONDITIONS”. The Bioscan, vol. 8, no. 4, Sept. 2013, pp. 1295-8, https://thebioscan.com/index.php/pub/article/view/294.