1. Fahrenfort, J., van Reijen, L. L., and Saehtler, W. M. H., “The Mechanism of Heterogeneous Catalysis” (Elsevier, 1960).
2. Schuit, G. C. A., van Reijen, L. L., and Sachtler, W. M. H. (preprint, International Conference on Catalysis, Paris, 1960).
3. Brennan, D., Hayward, D. O., and Trapnell, B. M. W., Proc. Roy. Soc., A, 256, 81 (1960).
4. Beeck, O., Cole, W. A., and Wheeler, A., Disc. Farad. Soc., No. 8, 315 (1950).
5. Rudham, R., and Stone, F. S., Trans. Farad. Soc., 54, 420 (1960).