%0 Journal Article %A V. G. Govorkov %A G. V. Berezhkova %A E. P. Kozlovskaya %T On the possible structural changes in the $\alpha$-$\mathrm{Al}_2\mathrm{O}_3$ crystals with temperature rise %J Doklady Akademii Nauk %D 1975 %P 316-318 %V 225 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1975_225_2_a17/ %G ru %F DAN_1975_225_2_a17