1. J. Christiansen, U.S. Patent 1302011, April 29, (1919).
2. The base-catalysed carbonylation of higher alcohols
3. J.W. Evans, P.S. Casey, M.S. Wainwright, D.L. Trimm and N.W. Cant, Applied Catalysis, in press.
4. H. Brendlein, German Patent 902375, January 21, (1954).
5. B.W. Higdon, C.C. Hobbs, M.J. Onore, U.S. Patent 171718, (1974).