%0 Journal Article %A O. N. German %A E. L. Lakshtanov %T On a multidimensional generalization of Lagrange's theorem on continued fractions %J Izvestiya. Mathematics %D 2008 %P 47-61 %V 72 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_2008_72_1_a2/ %G en %F IM2_2008_72_1_a2