Bussing, W. A. “<i>Roeboidaes ilseae</i>, N. Sp., a New Scale-Eating Characid Fish from Costa Rica”. Revista De Biología Tropical, vol. 33, no. 1, June 1985, pp. 45–50, https://revistas.ucr.ac.cr/index.php/rbt/article/view/24475.