F. Ucan-Marin, V. Cobos-Gasca, and R. C. Barrientos-Medina, “Identification lethal and sub lethal concentrations (LC50) of Organophosphate (OP) pesticide Diazinon using an endemic species (Yucatan Molly, Poecilia velifera Regan 1914) as a potential biomonitor for the intensive agricultural activities of Southeaster”, J. Res. Bio, vol. 3, no. 5, pp. 993-1002, Jul. 2013.