and B.B. NAGAICH, R.B.S. SAGAR, HARI OM AGRAWAL. 2002. “Studies on the Translocation of Potato Viruses X and Y in Potatoes”. Indian Phytopathology 46 (2): 110-17. https://epubs.icar.org.in/index.php/IPPJ/article/view/21432.