• [Wiki] https://en.wikipedia.org/wiki/Etheostoma_barbouri.
• [fishbase] https://www.fishbase.se/summary/Etheostoma-barbouri.html.
• [Flyn1975] Flynn, R. (1975). The life history of the teardrop darter, Etheostoma barbouri Kuehne and Small, in Kentucky. PhD thesis, Western Kentucky Univ.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.