@article{DAN_1975_225_4_a17,
     author = {N. A. Yamnova and M. A. Simonov and E. V. Kazanskaya and N. V. Belov},
     title = {More precise defined structure of $\mathrm{Ca}$, $\mathrm{Mg}$ carbonatoborate -- barcarite,  
},
     journal = {Doklady Akademii Nauk},
     pages = {823--826},
     publisher = {mathdoc},
     volume = {225},
     number = {4},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1975_225_4_a17/}
}