D.K. GHOSH and Y.S. AHLAWAT, V.K. BARANWAL*, S. MAZUMDER, JITENDER SINGH, V. SURYANARAYANA,. 2004. “PCR Detection of Candidatus Liberibacter Asiaticus, the Agent of Huanglongbin or Greening Disease in Citrus”. Indian Phytopathology 57 (2): 164-68. https://epubs.icar.org.in/index.php/IPPJ/article/view/18061.