Umaña V, Gerardo, and Carlos Jiménez. “The Basic Limnology of a Low Altitnde Tropical Crater Lake: Cerro Chato, Costa Rica”. Revista de Biología Tropical 43, no. 1-3 (December 1, 1995): 131–138. Accessed April 27, 2024. https://revistas.ucr.ac.cr/index.php/rbt/article/view/22421.