1. Myasoedova, G.V. and Nikashina, V.A., Ross. Khim. Zh. (Zh. Ross. Khim. O-va im. D.I. Mendeleeva), 2006, vol. 50, no. 5, pp. 55–63.
2. US Patent 3329481, 1967; appl. filed Oct. 18, 1963; publ. Jul. 4, 1967. no. 318829.
3. Al-Attar, L., Dyer, A., and Harjulab, R., J. Mater. Chem., 2003, vol. 13, pp. 2963–2968.
4. Nikolaev, A.I., Ivanyuk, G.Yu., Krivovichev, S.V., Yakovenchuk, V.N., Pakhomovskii, Ya.A., Gerasimova, L.G., et al., Vestn. Kol’sk. Nauchn. Tsentra Ross. Akad. Nauk, 2010, no. 3, pp. 51–62.
5. Wang, X. and Jacobson, A.J., Chem. Commun., 1999, no. 11, pp. 973–974.