Pina, Teresa, Eduardo Esteves, and José Pedro Andrade. 2003. “Gross and Histological Observations of Ovarian Development in Twaite Shad, Alosa Fallax Fallax, from Rivers Mira and Guadiana (Portugal)”. Scientia Marina 67 (3):313-22. https://doi.org/10.3989/scimar.2003.67n3313.