@article{DAN_1975_225_6_a17,
     author = {M. A. Simonov and Yu. K. Egorov-Tismenko and N. V. Belov},
     title = {More precise defined of structure of chkalovite, $\mathrm{Na}_2\mathrm{Be}[\mathrm{Si}_2\mathrm{O}_6]$},
     journal = {Doklady Akademii Nauk},
     pages = {1319--1322},
     publisher = {mathdoc},
     volume = {225},
     number = {6},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1975_225_6_a17/}
}