“Influence Of Different Coumarin Derivatives On Mycological Production Of Citric Acid By Aspergillus Niger Mutagens”. International Journal of Food and Nutritional Sciences 11, no. Special Issue 3 (January 1, 2022): 1592–1599. Accessed August 24, 2026. http://ijfans.org/index.php/Journal/article/view/9097.