• [Wiki] http://en.wikipedia.org/wiki/Pleurobema_riddellii.
• [unio] https://www.unio.lu/freshwater-mussel/biology/reproduction-cycle/.
• [FordPlan2020] Ford, D. F., Plants-Paris, E. D., and Ford, N. B. (2020). Comparison of louisiana pigtoe (Pleurobema riddellii, Mollusca, Unionidae) growth at three different locations in the Neches River Basin of East Texas. Hydrobiologia, 847:2021--2033. doi:10.1007/s10750-020-04228-8.
• [Haag2013] Haag, W. R. (2013). The role of fecundity and reproductive effort in defining life-history strategies of North American freshwater mussels. Biol. Rev., 88:745--766. doi:10.1111/brv.12028.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.