صقور س., رامز محمد, شيم سليمان, and نسرين نقشو. “Determining Optimum Conditions for Production of Xylanase From Trichoderma Harzianum Using Response Surface Methodology”. Tishreen University Journal -Biological Sciences Series, vol. 44, no. 4, Sept. 2022, pp. 61-77, https://journal.tishreen.edu.sy/index.php/bioscnc/article/view/12019.