1. P.H.M. De Korte, E.B.M. Doesburg, C.P.J. De Winter, L.L. Van Reijen: Solid State Ionics,16, 73 (1985).
2. I. Dodgson, K. Griffin, G. Barberis, F. Pignattaro, G. Tauszik: Chem. Ind., 830 (1989).
3. C.L. Thomas: Catalytic Processes and Proven Catalysts, p. 141. Academic Press, New York 1980.
4. M. Freifelder: Practical Catalytic Hydrogenation Techniques and Applications, p. 557. Wiley Interscience 1971.
5. D.G. Mustard, C.H. Bartholomew: J. Catal.,67, 186 (1981).