Eman S. Youssef. 2024. “Light Microscopic Study of the Lichens Xanthoria Parietina and Diploicia Canescens Infecting Citrus Trees in Egypt”. The International Journal of Multiphysics 18 (3):4011 -20. https://www.themultiphysicsjournal.com/index.php/ijm/article/view/2042.