Estrada, Marta, and Miquel Alcaraz. “The Publications of Ramon Margalef in Investigación Pesquera and Scientia Marina: The Beginnings of Marine Ecology in the CSIC”. Scientia Marina 84, no. 4 (December 11, 2020): 445–461. Accessed January 20, 2021. http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1884.