1. Delgass WN, Haller GL, Kellermann R, Lunsford JH (1979) Spectroscopy in Heterogeneous Catalysis. Academic Press, New York
2. Fierro JLG (1990) Stud Surf Sci Catal 57A: 1 ibid B: 1
3. Boehm HP, Knoezinger H (1983) In: Anderson JR, Boudart M (eds) Catalysis - Science and Technology, vol 4. Springer, Berlin Heidelberg New York, p 49
4. Kane PF, Larrabee GB (eds) (1976) Characterization of solid surfaces. Plenum Press, New York
5. Ward JW (1976) In: Rabo JA (ed) Zeolite chemistry and catalysis. Am Chem Soc, Mon 171, Washington, DC, p 118