@article{DAN_1974_218_2_a20,
     author = {G. F. Plakhov and M. A. Simonov and N. V. Belov},
     title = {Crystalline structure of $\mathrm{Na}$, $\mathrm{Be}$-orthosilicate, $\mathrm{Na}_2\mathrm{Be}[\mathrm{SiO}_4]$},
     journal = {Doklady Akademii Nauk},
     pages = {335--338},
     publisher = {mathdoc},
     volume = {218},
     number = {2},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1974_218_2_a20/}
}