Martins, Maria Manuel, Dankert Skagen, Vítor Marques, Juan Zwolinski, and Alexandra Silva. “Changes in the Abundance and Spatial Distribution of the Atlantic Chub Mackerel (Scomber Colias) in the Pelagic Ecosystem and Fisheries off Portugal”. Scientia Marina 77, no. 4 (December 30, 2013): 551–563. Accessed December 4, 2022. https://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1489.