Valente, T.M., and C.L. Gomes. “The Role of Two Acidophilic Algae As Ecological Indicators of Acid Mine Drainage Sites”. Journal of Iberian Geology 33, no. 2 (January 1, 2007): 283–294. Accessed November 5, 2024. https://revistas.ucm.es/index.php/JIGE/article/view/JIGE0707210283A.