@article{DAN_1969_189_1_a22,
     author = {A. V. Chichagov and V. S. Kovalenko and V. I. Ponomarev and N. V. Belov},
     title = {Crystalline structure of
},
     journal = {Doklady Akademii Nauk},
     pages = {88--90},
     publisher = {mathdoc},
     volume = {189},
     number = {1},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_189_1_a22/}
}