1. Barret, P., Cinetique Heterogene, Paris: Ganthier-Villars, 1973.
2. Krashennikova, A.A., Syrkina, I.G., and Ul?yankina, G.S., Zh. Fiz. Khim., 1978, vol. 52, no.9, pp. 2255?2258.
3. Sharygin, L.M. and Tret?yakov, S.J., Available from VINITI, 1973, Moscow, no. 6597?73.
4. Tret?yakov, S.J. and Sharygin, L.M., Available from VINITI, 1976, Moscow, no. 433?76.
5. Riis, T., Dahl, J.M., and Ellestad, O.H., J. Molec. Catal., 1983, vol. 18, no.2, pp. 203?214.