Günther Nonell, Jorge, and Jorge Boza Abarca. “Intensive Rearing of Juveniles of Cichlasoma Managuense (Günther 1869) in Recirculated Systems (ESP)”. Uniciencia 8, no. 1 (January 1, 1991): 3-10. Accessed March 1, 2021. https://www.revistas.una.ac.cr/index.php/uniciencia/article/view/5438.