1. G.J. Gajda, US Patent 5 132 484, 1991
2. I. Rahmin, A. Huss Jr., D.N. Lissy, D.J. Locke, I.D. Johnson, US Patent 5 237 121, 1992
3. H.H. Mooiweer, K.P. de Jong, B. Kraushaar-Czarnetzki, W.H.J. Stork, B.C.H. Krutzen, Zeolites and Related Microporous Materials. State of the Art 1994, Stud. Surf. Sci. Catal. 84 (1994) 319; Eur. Patent 0 627 394 A1
4. Skeletal Isomerization ofn-Butene
5. Skeletal Isomerization of Butene: On the Role of the Bimolecular Mechanism