%0 Journal Article %A V. P. Platonov %A G. V. Fedorov %T The criterion of periodicity of continued fractions of key elements in hyperelliptic fields %J Čebyševskij sbornik %D 2019 %P 248-260 %V 20 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/CHEB_2019_20_1_a14/ %G ru %F CHEB_2019_20_1_a14