%0 Journal Article %A V. T. Ushakovskii %A L. N. Chernyi %A P. I. Nikitichev %T On the growth of hexagonal prism faces in quartz crystals %J Doklady Akademii Nauk %D 1970 %P 1040-1042 %V 192 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1970_192_5_a20/ %G ru %F DAN_1970_192_5_a20