Monge-Nájera, Julian, and Lizeth Díaz. “Thirty-Five Years of Tropical Biology: A Quantitative History”. Revista de Biología Tropical 36, no. 2B (November 1, 1988): 347–359. Accessed May 12, 2025. https://www.revistas.ucr.ac.cr/index.php/rbt/article/view/23679.