1. Zeolite Molecular Sieves;Breck,1984
2. An Introduction to Zeolite Molecular Sieves;Dyer,1988
3. Zeolites and Clay Minerals as Sorbents and Molecular Sieves;Barrer,1978
4. Natural Zeolites;Gottardi,1985
5. Determination and refinement of the structure of heulandite;Merkle;Am. Mineral.,1968