@article{DAN_1969_184_1_a21,
     author = {M. I. Samoilovich and L. I. Tsinober and I. P. Khadzhi},
     title = {Investigation of coloured synthetic quartz crystals},
     journal = {Doklady Akademii Nauk},
     pages = {91--93},
     publisher = {mathdoc},
     volume = {184},
     number = {1},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_184_1_a21/}
}