1. Cohen, P., Proc. R. Soc. Lond. (Biol.), 1998, vol. 234, pp. 115–144.
2. Cohen, P. , Annu. Rev. Biochem., 1989, vol. 58, pp. 453–508.
3. Parsadanyan, G.K., Neirokhimiya, 1983, vol. 2, pp. 84–103.
4. Wetzel, B.K., Spicer, S.S., and Horn, R.G., J. Histochemistry & Cytochemistry, 1967, vol. 15, pp. 311–334.
5. Uyeki, E.M., Internat. J. Radiation Biol., 1963, vol. 6, pp. 247–255.