%0 Journal Article %A M. O. Avdeeva %A V. A. Bykovskii %T An analogue of Vahlen's theorem for simultaneous %J Sbornik. Mathematics %D 2003 %P 955-967 %V 194 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_2003_194_7_a0/ %G en %F SM_2003_194_7_a0