MOHI-ALDIN, M. . O.; HUSSAIN, A. . M. Optimization of Citric acid production from Locally isolate fungus Aspergillus niger by solid state fermentation. Ibn AL- Haitham Journal For Pure and Applied Sciences, [S. l.], v. 28, n. 2, p. 208–224, 2017. Disponível em: https://jih.uobaghdad.edu.iq/index.php/j/article/view/226. Acesso em: 23 may. 2022.