1. Murchison CB, Conway MM, Stevens RR, Quarderer CJ (1988) In: Phillips MJ, Ternan M (eds) Proceedings of 9th International Congress on Catalysis, vol 2, Calgary, Chemical Institute of Canada, Ottawa, p 626
2. Santiesteban JC, Boogdan CE, Herman RG, Klier K (1988) In: Phillips MJ, Ternan M (eds) Proceedings of 9th International Congress on Catalysis, vol 2, Calgary, Chemical Institute of Canada, Ottawa
3. Xu X, Doesburg EBM, Scholten JJF (1987) Catal Today 2:125
4. Natta G, Colombo U, Pasquon I (1957) In: Catalysis, vol 131, ed. Emmett
5. Iranmahboob J, Hill DO (2002) Catal Letters 78:49