FEMI-OLA T. O.; ATERE V. A. Citric acid production from brewers spent grain by Aspergillus niger and Saccharomyces cerevisiae. International Journal of Research in BioSciences (IJRBS), [S. l.], v. 2, n. 1, p. 30-37, 2012. Disponível em: http://ijrbs.in/index.php/ijrbs/article/view/62. Acesso em: 2 apr. 2025.