%0 Journal Article %A A. I. Kruglik %A S. V. Misjul %A K. S. Aleksandrov %T Crystal structure of a ferroelectric phase of ammonium hydrogen selenate %J Doklady Akademii Nauk %D 1980 %P 344-348 %V 255 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1980_255_2_a18/ %G ru %F DAN_1980_255_2_a18