@article{DAN_1973_208_4_a21,
     author = {L. F. Vereshchagin and V. N. Apollonov and M. D. Shalimov and Ya. A. Kalashnikov and V. M. Grigor'ev},
     title = {On twins of diamond of synthetic ballases},
     journal = {Doklady Akademii Nauk},
     pages = {844},
     publisher = {mathdoc},
     volume = {208},
     number = {4},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1973_208_4_a21/}
}