A. J. R. . Al-Sa’ady, “Determination of optimum conditions for xylanase production by Aspergillus niger using solid state fermentation”, Iraqi Journal of Science, vol. 57, no. 3C, pp. 2220–2227, Feb. 2022, Accessed: Jan. 07, 2026. [Online]. Available: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/6436