1. O. Wurzburg, U.S. Patent 3,821,069, 1974.
2. H. Ashjian, S.Z. Ho, M.M. Wu, U.S. Patent 5,691,281, 1997.
3. M. Clarembeau, P. Steylaerts, U.S. Patent 5,849,974, 1998.
4. The Organometallic Chemistry of the Transition Metals;Crabtree,2009
5. Dimerization of linear olefins on Amberlyst® 15: Effects of chain length and double-bond position