QASEM, M.; AL-HAMADANI, enam. Citric acid production by different local isolates of mushrooms Aspergillus niger. Journal of Education and Science (JES), [S. l.], v. 20, n. 1, p. 402–409, 2007. DOI: 10.33899/edusj.2007.162820. Disponível em: https://ojs.uomosul.edu.iq/index.php/edusj/article/view/23760. Acesso em: 6 aug. 2025.