Previous Article Next Article Table of Contents Journal of Catalysis, Vol.187, No.2, 521-523, 1999 DOI10.1006/jcat.1999.2630 Export Citation On the characterization of the external acid sites of ferrierite and other zeolites: A reply to Pieterse et al. Trombetta M, Busca G Keywords:IR Please enable JavaScript to view the comments powered by Disqus.