Carvalho, T. P. and Reis, R. E. (2009) “Four new species of Hisonotus (Siluriformes: Loricariidae) from the upper rio Uruguay, southeastern South America, with a review of the genus in the rio Uruguay basin”, Zootaxa. Auckland, New Zealand, 2113(1), pp. 1–40. doi: 10.11646/zootaxa.2113.1.1.