%0 Journal Article %A L. F. Vereshchagin %A V. N. Apollonov %A M. D. Shalimov %A Ya. A. Kalashnikov %A V. M. Grigor'ev %T On twins of diamond of synthetic ballases %J Doklady Akademii Nauk %D 1973 %P 844 %V 208 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1973_208_4_a21/ %G ru %F DAN_1973_208_4_a21