1. Sabatier, P.; Senderens, J.: C. R. Acad. Sci. 134 (1902) S. 514.
2. Bellagi, A.: Dissertation, TH Aachen 1979.
3. Lommerzheim, W.: Gas Wasserfach 118 (1977) S. 417.
4. Hedden, K.; Anderlohr, A.: Gas Wasserfach 118 (1977) S. 422.
5. Graboski, M. S.; Diehl, E. K.: Preprints, 5th Synthetic Pipeline Gas Symposium, American Gas Association, U. S. Office of Coal Research, International Gas Union, Chicago, Ill., Oct. 1973.