P. Concepcion-Heydorn, C. Jia, D. Herein, N. Pfänder, H.G. Karge and F.C. Jentoft: Structural and Catalytic Properties of Sodium and Cesium Exchanged X and Y Zeolites, and Germanium-Substituted X Zeolite. Journal of Molecular Catalysis A162 (1-2), 227–246 (2000).
B. Sulikowski, J. Find, H.G. Karge and D. Herein: Solid-state ion exchange in zeolites: Part 8. Interaction of lanthanum(III) chloride with zeolites under anhydrous conditions. Zeolites19 (5-6), 395–403 (1997).
B. Herzog, D. Herein and R. Schlögl: In situ X-ray powder diffraction analysis of the microstructure of activated iron catalysts for ammonia synthesis. Applied Catalysis A: General141 (1-2), 71–104 (1996).