1. Blaustein, AR and Kiesecker, JM. (2002) Complexity in conservation: Lessons from the global decline of amphibian populations Ecol. Lett., 5, pp. 597 - 608.
2. IUCN.(2004) Global amphibian assessment. Washington DC: Center for Applied Biodiversity Science.
3. Úbeda, A and Leal, J and Trillo, MA and Jimenez, MA and Delgado, JMR. (1983) Pulse shape of magnetic fields influences chick embryogenesis J. Anat., 137, pp. 513 - 536.
4. McGivern, RF and Sokol, RZ and Adey, WR. (1990) Prenatal exposure to a low-frequency electromagnetic field demasculinizes adult scent marking behavior and increases accessory sex organ weights in rats Teratology, 41, pp. 1 - 8.
5. Di Carlo, AL and Hargis, MT and Penafiel, LM and Litovitz, TA. (1999) Short-term magnetic field exposures (60 Hz) induce protection against ultraviolet radiation damage Int. J. Radiat. Biol., 75, pp. 1541 - 1549.