1. B.D. Dombek: Adv. Catal 32, 325 (1983).
2. The Research Association for C1 Chemistry; Kodansha, Tokio-Elsevier, Amsterdam (1989).
3. P.H. Emmett: Catalysis Vol.4, Van Nostrand-Reinhold, Princeton, New Jersey (1956).
4. R.L. Pruett:Ann. N. Y. Acad. Sci. 295, 239 (1977).
5. W.F. Gresham and C.E. Shweitzer, (DuPont): U.S. Patent 2,534,218 (1950);