1. J. F. Brazdil Jr., M.A. Toft, L.C. Glaeser US Patent 5008 427 1991 assigned to stangard Oil Co., Ohio.
2. M.J. Seely, M.S. Friedrich US Patent 4978 764 1990 assigned to Standard Oil Co., Ohio.
3. J. UmemuraJap. Patent 77148 022 1977 assigned to Ube Kosan Co.
4. Functionalization of alkanes by heterogeneous vapour-phase oxidation.
5. J.F. Brazdil, Jr., M.A. Toft, L.C. Glaeser US Patent 4918 214 1990 assigned to stangard Oil Co., Ohio.