Ponce, R, JM Forja, and A Gómez-Parra. 2000. “Influence of Anthropogenic Activity on the Vertical Distribution of Zn, Cd, Pb and Cu in Interstitial Water and Coastal Marine Sediments (Cádiz Bay, SW Spain)”. Ciencias Marinas 26 (3):479-502. https://doi.org/10.7773/cm.v26i3.590.