1. S.P.S. Andrew, CHEMTECH 9 (1979) 180.
2. B. Delmon, P. Jacobs, G. Poncelet (Eds.), Preparation of Catalyst 1, Studies in Surface Science and Catalysis, vol. 1, Elsevier, Amsterdam, 1976, and following books of the same series (last vol. 143).
3. J.W. Geus, in: G. Poncelet, P. Grange, P.A. Jacobs (Eds.), Preparation of Catalysts III, Studies in Surface Science and Catalysis, vol. 16, Elsevier, Amsterdam, 1983, p. 1.
4. Ph. Courty, Ch. Marcilly, in: G. Poncelet, P. Grange, P.A. Jacobs (Eds.), Preparation of Catalysts III, Studies in Surface Science and Catalysis, vol. 16, Elsevier, Amsterdam, 1983, p. 485.
5. P.T. Cardew, R.J. Davey, P. Ellitt, A.W. Nienow, J.P. Winterbottom, in: B. Delmon, P. Grange, P.A. Jacobs, G. Poncelet (Eds.), Preparation of Catalysts IV, Studies in Surface Science and Catalysis, vol. 31, Elsevier, Amsterdam, 1987, p. 15.