1. Disperse Festkörper als Katalysatoren
2. e.g. G. K. Boreskov in Proc. 1st Int. Sym. Scientific Bases for the Prepn. of Het. Catalysts, Brussels, October, 1975, ed. B. Delmon, P. Jacobs and G. Poncelet, Stud. Surf. Sci. Catal., 1976, 1, 223.
3. New trends in catalyst preparation
4. M. Che and L.Bonneviot in Successful Design of Catalysts, ed. T. Inui, Elsevier, Amsterdam, 1988, p. 147.