1. Barrer RM (1962) Some features of ion exchanges in crystals. Chem Ind 1258–1266
2. Barrer RM (1982) Hydrothermal Chemistry of Zeolites. Academic Press, London
3. Belov NV (1976) Ocherki po Strukturnoy Mineralogii (Essays on Structural Mineralogy). Nedra Publishing, Moscow (in Russian)
4. Belyaevskaya GP, Borutskiy BE, Marsiy IM, Vlasova EV, Sivtsov AV, Golovanova TI, Vishnev AI (1991) Potassium-calcium gaidonnayite, (Ca,Na,K)2−-xZrSi3O9·nH2O, a new mineral variety from the Khibiny massif. Dokl RAN 320:5:1220–1225 (in Russian)
5. Breck DW (1974) Zeolites Molecular Sieves: Structure, Chemistry and Use. John Wiley & Sons, New York