E. Klemm, H. Seiler, and G. Emig. Zeolite science 1994 : recent progress and discussions; supplementary materials to the 10th International Zeolite Conference, 98, page 246. Amsterdam, Elsevier, (1995)
Y. Traa, A. Raichle, F. Fuder, M. Rupp, and J. Weitkamp. Proceedings of the 17th World Petroleum Congress, 3 : Excelling in refining and delivering quality petrochemicals, London, Institute of Petroleum, (2003)
F. Fuder, D. Landwehr, G. Geipel, C. Herkt-Bruns, and J. Weitkamp. Proceedings of the 17th World Petroleum Congress, 3 : Excelling in refining and delivering quality petrochemicals, London, Institute of Petroleum, (2003)