1. J. A. Rabo, P. E. Pickert, D. N. Stamires and J. Boyle, Int. Congr. Catal. 2nd, Paris, 1960, p. 2055
2. P. B. Weisz and V. J. Frilette, J. Phys. Chem. 1960, 64, 382.
3. N. Y. Chen, J. Maziuk, A. B. Schwartz and P. B. Weisz, Oil Gas J. 1968, 66, 154.
4. P. B. Weisz, Chem. Technol. 1973, p. 498.
5. K. V. Topchieva, B. V. Romanovsky, L. I. Pigusova, H. S. Thuoang and Y. W. Bizreh, Fourth Inter. Congr. Catal. Moscow, 1968, Paper 57.