A.K. DAS, DILIP GHOSH* and. “Duplex PCR-Based Assay for Simultaneous Detection of Tristeza and Greening Diseases in Citrus”. Indian Phytopathology, vol. 65, no. 4, Dec. 2012, pp. 328-33, https://epubs.icar.org.in/index.php/IPPJ/article/view/25409.