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: 2 may. 2024.