For citations:

Eremin N.N., Eremina T.A., Gurbanova O.A. Spaсe groups and symmetry classes frequency distribution in structural mineralogy. New data. Moscow University Bulletin. Series 4. Geology. 2025;64(6):3-15. (In Russ.) https://doi.org/10.55959/MSU0579-9406-4-2025-64-6-3-15