1. B.M. Lok, C.A. Messina, R.L. Patton, R.T. Gajek, T.R. Cannan, E.M. Flanigen, US Patent 4,440,871 (1984).
2. R.J. Pellet, P.K. Coughlin, G.N. Long, J.A. Rabo, US Patent 4,880,760 (1989).
3. F.P. Gortsema, A.R. Springer, G.N. Long, US Patent 4,880,700 UOP (1989).
4. F.P. Gortsema, K.J. Pellet, A.R. Springer, J.A. Rabo, G.N. Long, US Patent 4,913,799 (1990).
5. Modeling of Silicon Substitution in SAPO-5 and SAPO-34 Molecular Sieves