%0 Journal Article %A P. V. Klevtsov %A L. P. Kozeeva %T Synthesis X-ray and thermographic study of potassium~-- rare earth tungstatcs, $\mathrm{KLn}(\mathrm{WO}_4)_2$; %J Doklady Akademii Nauk %D 1969 %P 571-574 %V 185 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1969_185_3_a20/ %G ru %F DAN_1969_185_3_a20