1. J.V. Smith, Mineralogical Society of America Special Paper Number One-Papers and Proceedings of the Third General Meeting of the International Mineralogical Association, D.J. Fisher, A.J. Frueth, C.S. Hurlbut, C.E. Tilley Eds., (1963) 281–290.
2. Zeolites and clathrasils—Two distinct classes of framework silicates
3. http://www.iza-structure.org/default.htm.