ELRoby, A. S.M.H., and M. G. Darwish. 2018. “Biological Activity of Certain Natural Products Against Varroa Destructor (Acari:Varroidae) and Their Selectivity Against Apis Mellifera (Hymenoptera: Apidae)”. Journal of Phytopathology and Disease Management 5 (3):67-76. https://ppmj.net/index.php/ppmj/article/view/158.