%0 Journal Article %A E. L. Belokoneva %A A. V. Pashkova %A T. I. Timchenko %A N. V. Belov %T Crystal structure of a new monoclinic modification of high-temperature $\mathrm{TR}$--$\mathrm{Al}$-borate, %J Doklady Akademii Nauk %D 1981 %P 361-365 %V 261 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1981_261_2_a22/ %G ru %F DAN_1981_261_2_a22