A. Rumi, D. E. Gutiérrez Gregoric, and M. Andrea Roche, “Growth rate fitting using the von Bertalanffy model: analysis of natural populations of Drepanotrema spp. snails (Gastropoda: Planorbidae)”, Rev. Biol. Trop., vol. 55, no. 2, pp. 559–567, Jun. 2007.