1. Free Radicals in Biology and Medicine., B. Halliwell, J.M.C. Gutteridge, Clarendon Press, Oxford, (1985); B.H.J. Bielski and J.M. Gebicki, In: Free Radicals in Biology, W.A. Pryor (Ed.). Academic Press, New York, vol. III, Ch. 1 (1977).
2. G.S. Scott, European Polym. J. (Supplement):, 189 (1969);
3. J. Stepek and H. Daoust, Additives for Plastics, New York, Springer-Verlag (1985).
4. C. Heitner, in: Photochemistry of Lignocellulosic Materials, ACS Symposium Series 531, C. Heitner and J.C. Scaiano (Eds.), Ch. 1, Washington, DC (1993).
5. G. Leary, J. Pulp and Paper Sci., 20, J154 (1994).