“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 September 6, 2026. https://www.ijfans.org/index.php/Journal/article/view/9097.