Molina-Ureña, H. “Ichthyoplankton Assemblages in the Gulf of Nicoya and Golfo Dulce Embayments, Pacific Coast of Costa Rica”. Revista De Biología Tropical, vol. 44, no. S3, Dec. 1996, pp. 173–182, https://www.revistas.ucr.ac.cr/index.php/rbt/article/view/29563.