Kostova, D., V. Lisa, R.G. Milne, A.M. Vaira, G. Dellavalle, and S. Tsorlianis. “Virus Diseases of Vegetable Crops in Southern Bulgaria”. Phytopathologia Mediterranea 42, no. 1 (April 1, 2003): 3–8. Accessed August 24, 2024. https://oajournals.fupress.net/index.php/pm/article/view/4990.