1. B.M. Lok, C.A. Messina, R.L. Patton, R.T. Gajek, T.R. Cannan, E.M. Flanigen, US Patent No. 4440871, 1984.
2. S.T. Wilson, E.M. Flanigen, US Patent No. 4567029, 1986.
3. B.M. Lok, B.K. Marcus, L.D. Vail, E.M. Flanigen, R.L. Patton, S.T. Wilson, Eur. Patent No. 159624, 1985.
4. Innovation in Zeolite Materials Science;Flanigen,1987
5. Guidelines for Mastering the Properties of Molecular Sieves;Mertens,1990