@article{DAN_1970_195_2_a19,
     author = {D. P. Shashkin and M. A. Simonov and N. V. Belov},
     title = {Crystalline structure of calciborite~--
},
     journal = {Doklady Akademii Nauk},
     pages = {345--348},
     publisher = {mathdoc},
     volume = {195},
     number = {2},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1970_195_2_a19/}
}