DWIVEDI, S., R. SINGH, and R. PRAGNABHARATHI. “THE SCREENING OF MUSTARD VARIETIES RESISTANCE AGAINST MUSTARD APHID Lipaphis Erysimi Kalt”. PLANT CELL BIOTECHNOLOGY AND MOLECULAR BIOLOGY, Vol. 20, no. 9-10, July 2019, pp. 397-08, http://www.ikprress.org/index.php/PCBMB/article/view/4633.