1. N. V. Chukanov and I. V. Pekov, in Micro- and Mesoporous Mineral Phases (Reviews in Mineralogy and Geochemistry Series), Ed. by G. Ferraris and S. Merlino (Mineralogical Society of America, Washington, 2005), Vol. 57, p. 105.
2. R. K. Rastsvetaeva, N. V. Chukanov, and S. M. Aksenov, Eudialyte-Group Minerals: Crystal Chemistry, Properties, Genesis (Izd-vo NGU, Nizhny Novgorod, 2012) [in Russian].
3. S. F. Solodovnikov, Basic Terms and Concepts of Structural Crystallography and Crystal Chemistry (Izd-vo INKh SO RAN, Novosibirsk, 2005) [in Russian].
4. V. I. Andrianov, Kristallografiya 32 (1), 228 (1987).
5. R. K. Rastsvetaeva and A. P. Khomyakov, Dokl. RAN. Khim. 362 (6), 784 (1998).