IBRAHIM, Husham T.; QIANG, He; AL-REKABI, Wisam S.; QIQI, Yang. Improvements in Biofilm Processes for Wastewater Treatment. Pakistan Journal of Nutrition, Pakistan, v. 11, n. 8, p. 708–734, 2012. DOI: 10.3923/pjn.2012.708.734. Disponível em: https://pjnonline.org/pjn/article/view/1683. Acesso em: 15 aug. 2025.