H.  Van Gossum, Bots, J., Snijkers, T., Meyer, J., Van Wassenbergh, S., De Coen, W., and De Bruyn, L., ?Behaviour of damselfly larvae (Enallagma cyathigerum) (Insecta, Odonata) after long-term exposure to PFOS?, Environ Pollut, vol. 157, pp. 1332-6, 2009.