1. Cronstedt A. Kongl.Svenska Vetenskaps Academiens Handlingar. Vol. 17. Stockholm: Lorentz Ludvig Grefing; 1756. p. 120
2. Nagy JB, Bodart P, Hannus I, Kiricsi I. Synthesis, Caraterization and Use of Zeolitic Micoporous Mateials. Hungary: DecaGen Ltd; 1998
3. Breck DW. Zeolite Molecular Sieves Structure Chemistry and Use. New York: John Wilay & Sons; 1974
4. Baerlacher C, Meier RW, Olson DH. Atlas of Zeolite Structure Types. 3rd Revised ed. London: Butterworth-Heinemann; 1992
5. Barrer RM, Baynham JW, Bultitude FW, Meier WM. Hydrothermal chemistry of the silicates. Part VIII. Low-temperature crystal growth of aluminosilicates, and of some gallium and germanium analogues. Journal of the Chemical Society. 1959:195