M. RAMIAH and A. VARMA*, JYOTI SHARMA, R.K. JAIN,. “Natural Spread of Papaya Ringspot Virus to New Areas: Occurrence in Coimbatore, Tamil Nadu”. Indian Phytopathology, vol. 58, no. 2, May 2005, pp. 245-9, https://epubs.icar.org.in/index.php/IPPJ/article/view/17487.