Said, I., S. Rodríguez, M. Berkhli, P. Cózar, and A. Gómez-Herguedas. 2010. “Environmental Parameters of a Coral Assemblage from the Akerchi Formation (Carboniferous), Adarouch Area, Central Morocco”. Journal of Iberian Geology 36 (1): 7-19. https://revistas.ucm.es/index.php/JIGE/article/view/JIGE1010120007A.