Dokl. Akad. Nauk SSSR, 1981 Volume 261, Number 4,Pages 874–878(Mi dan44914)
CRYSTALLOGRAPHY
Solid electrolytes of the composition $\mathrm{Na}_5\mathrm{TRSi}_4\mathrm{O}_{12}$ with
$\mathrm{TR}$–$\mathrm{Yb}$, $\mathrm{Ho}$, $\mathrm{Dy}$. Crystal structure and ionic conductivity in the temperature range of $300$–$600$ K