@article{DAN_1957_115_3_a15,
     author = {M. S. Kosman and \`E. V. Bursian},
     title = {Coloration of single $\mathrm{BaTiO}_3$ crystals},
     journal = {Doklady Akademii Nauk},
     pages = {483--485},
     publisher = {mathdoc},
     volume = {115},
     number = {3},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1957_115_3_a15/}
}