Федоров Е.С. Новый пример особого структурного изоморфизма // Записки Горного института. 1916. Т. 6 № 1. С. 65-66.
Fedorov E.S. A new example of a special structural isomorphism // Journal of Mining Institute. 1916. Vol. 6 № 1. p. 65-66.
These few examples (see article) provide extremely important indications of the dependence of crystallization on the arrangement of atoms in particles of complex structure. In such particles, therefore, it is necessary to distinguish between the central and peripheral parts (in simple particles, for example ClNa, this is impossible) and only the latter, by the density of the arrangement of atoms, determines the position of possible faces.