@article{DAN_1967_174_3_a19,
     author = {G. V. Kleshchev and I. V. Kabanovich and L. N. Chernyi},
     title = {On the nature of the optical inhomogeneity of quartz},
     journal = {Doklady Akademii Nauk},
     pages = {585--586},
     publisher = {mathdoc},
     volume = {174},
     number = {3},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1967_174_3_a19/}
}