• [Wiki] https://en.wikipedia.org/wiki/Barbus_balcanicus.
• [fishbase] http://www.fishbase.org/summary/Barbus-balcanicus.
• [BertPizz2019] Bertoli, M., Pizzul, E., Devescovi, V., Franz, F., Pastorino, P., Giulianina, P. G., Ferrari, C., and Marzano, F. N. (2019). Biology and distribution of Danube barbel (Barbus balcanicus) (Osteichthyes: Cyprinidae) at the Northwestern limit of its range. The European Zoological Journal, 86(1):280–293. doi:10.1080/24750263.2019.1647298.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.